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Planck 2015 results...
Planck 2015 results XX. Constraints on inflation
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Ade, P. A. R. (author)
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Aghanim, N. (author)
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Arnaud, M. (author)
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show more...
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Arroja, F. (author)
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Ashdown, M. (author)
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Aumont, J. (author)
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Baccigalupi, C. (author)
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Ballardini, M. (author)
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Banday, A. J. (author)
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Barreiro, R. B. (author)
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Bartolo, N. (author)
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Battaner, E. (author)
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Benabed, K. (author)
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Benoit, A. (author)
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Benoit-Levy, A. (author)
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Bernard, J. -P. (author)
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Bersanelli, M. (author)
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Bielewicz, P. (author)
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Bock, J. J. (author)
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Bonaldi, A. (author)
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Bonavera, L. (author)
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Bondi, J. R. (author)
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Borrillu, J. (author)
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Bouchet, F. R. (author)
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Boulanger, F. (author)
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Bucher, M. (author)
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Burigana, C. (author)
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Butler, R. C. (author)
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Calabrese, E. (author)
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Cardoso, J. -F. (author)
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Catalano, A. (author)
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Challinor, A. (author)
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Chamballu, A. (author)
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Chary, R. -R. (author)
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Chiang, H. C. (author)
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Christensen, P. R. (author)
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Churchl, S. (author)
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Clements, D. L. (author)
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Colombi, S. (author)
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Colombo, L. P. L. (author)
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Combet, C. (author)
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Contreras, D. (author)
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Couchot, F. (author)
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Coulais, A. (author)
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Crill, B. P. (author)
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Curto, A. (author)
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Cuttaia, F. (author)
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Danese, L. (author)
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Davies, R. D. (author)
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Davis, R. J. (author)
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de Bernardis, P. (author)
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de Rosa, A. (author)
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de Zotti, G. (author)
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Delabrouillei, J. (author)
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Desert, F. -X. (author)
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Diego, J. M. (author)
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Dole, H. (author)
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Donzelli, S. (author)
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Dore, O. (author)
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Douspis, M. (author)
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Ducout, A. (author)
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Dupac, X. (author)
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Efstathiou, G. (author)
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Elsner, F. (author)
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Ensslin, T. A. (author)
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Eriksen, H. K. (author)
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Fergusson, J. (author)
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Finelli, F. (author)
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Forni, O. (author)
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Frailis, M. (author)
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Fraisse, A. A. (author)
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Franceschi, E. (author)
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Frejsel, A. (author)
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Frolov, A. (author)
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Galeotta, S. (author)
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Galli, S. (author)
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Ganga, K. (author)
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Gauthier, C. (author)
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Giard, M. (author)
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Giraud-Heraud, Y. (author)
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Gjerlow, E. (author)
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Gonzalez-Nuevo, J. (author)
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Gorski, K. M. (author)
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Gratton, S. (author)
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Gregorio, A. (author)
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Gruppuso, A. (author)
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- Gudmundsson, Jón E. (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Nordiska institutet för teoretisk fysik (Nordita),Princeton University, USA
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Hamann, J. (author)
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Handley, W. (author)
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Hansen, F. K. (author)
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Hanson, D. (author)
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Harrison, D. L. (author)
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Henrot-Versille, S. (author)
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Hernandez-Monteagudo, C. (author)
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Herranz, D. (author)
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Hildebrandt, S. R. (author)
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Hivon, E. (author)
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Hobson, M. (author)
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Holmes, W. A. (author)
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Hornstrup, A. (author)
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Hovest, W. (author)
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Huang, Z. (author)
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Huffenberger, K. M. (author)
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Hurier, G. (author)
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Jaffe, A. H. (author)
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Jaffe, T. R. (author)
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Jones, W. C. (author)
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Juvela, M. (author)
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Keihanen, E. (author)
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Keskitalo, R. (author)
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Kim, J. (author)
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Kisner, T. S. (author)
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Kneissl, R. (author)
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Knoche, J. (author)
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Kunz, M. (author)
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Kurki-Suonio, H. (author)
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Lagache, G. (author)
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Lahteenmaki, A. (author)
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Lamarre, J. -M. (author)
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Lasenby, A. (author)
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Lattanzi, M. (author)
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Lawrence, C. R. (author)
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Leonardi, R. (author)
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Lesgourgues, J. (author)
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Levrier, F. (author)
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Lewis, A. (author)
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Liguori, M. (author)
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Lilje, P. B. (author)
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Linden-Vornle, M. (author)
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Lopez-Caniego, M. (author)
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Lubin, P. M. (author)
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Ma, Y. -Z. (author)
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Macias-Perez, J. F. (author)
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Maggio, G. (author)
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Maino, D. (author)
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Mandolesi, N. (author)
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Mangilli, A. (author)
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Maris, M. (author)
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Martini, P. G. (author)
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Martinez-Gonzalez, E. (author)
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Masi, S. (author)
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Matarrese, S. (author)
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McGehee, P. (author)
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Meinhold, P. R. (author)
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Melchiorri, A. (author)
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Mendes, L. (author)
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Mennella, A. (author)
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Migliaccio, M. (author)
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Mitra, S. (author)
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Miville-Deschenes, M. -A. (author)
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Molinari, D. (author)
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Moneti, A. (author)
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Montier, L. (author)
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Morgante, G. (author)
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Mortlock, D. (author)
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Moss, A. (author)
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Munchmeyer, M. (author)
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Munshi, D. (author)
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Murphy, J. A. (author)
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Naselsky, P. (author)
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Nati, F. (author)
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Natoli, P. (author)
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Netterfield, C. B. (author)
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Norgaard-Nielsen, H. U. (author)
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Noviello, F. (author)
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Novikov, D. (author)
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Novikov, I. (author)
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Oxborrow, C. A. (author)
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Paci, F. (author)
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Pagano, L. (author)
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Pajot, F. (author)
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Paladini, R. (author)
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Pandolfi, S. (author)
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Paoletti, D. (author)
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Pasian, F. (author)
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Patanchon, G. (author)
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Pearson, T. J. (author)
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Peiris, H. V. (author)
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Perdereau, O. (author)
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Perotto, L. (author)
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Perrotta, F. (author)
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Pettorino, V. (author)
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Piacentini, F. (author)
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Piat, M. (author)
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Pierpaoli, E. (author)
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Pietrobon, D. (author)
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Plaszczynski, S. (author)
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Pointecouteau, E. (author)
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Polenta, G. (author)
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Popa, L. (author)
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Pratt, G. W. (author)
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Prezeau, G. (author)
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Prunet, S. (author)
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Puget, J. -L. (author)
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Rachen, J. P. (author)
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Reach, W. T. (author)
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Rebolo, R. (author)
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Reinecke, M. (author)
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Remazeilles, M. (author)
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Renault, C. (author)
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Renzi, A. (author)
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Ristorcelli, I. (author)
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Rocha, G. (author)
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Rosset, C. (author)
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Rossetti, M. (author)
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Roudier, G. (author)
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Rowan-Robinson, M. (author)
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Rubino-Martin, J. A. (author)
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Rusholme, B. (author)
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Sandri, M. (author)
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Santos, D. (author)
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Savelainen, M. (author)
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Savini, G. (author)
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Scott, D. (author)
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Seiffert, M. D. (author)
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Shellard, E. P. S. (author)
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Shiraishi, M. (author)
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Spencer, L. D. (author)
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Stolyarov, V. (author)
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Stompori, R. (author)
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Sudiwala, R. (author)
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Sunyaev, R. (author)
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Sutton, D. (author)
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Suur-Uski, A. -S. (author)
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Sygnet, J. -F. (author)
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Tauber, J. A. (author)
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Terenzi, L. (author)
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Toffolatti, L. (author)
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Tomasi, M. (author)
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Tristram, M. (author)
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Trombetti, T. (author)
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Tucci, M. (author)
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Tuovinen, J. (author)
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Valenziano, L. (author)
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Valiviita, J. (author)
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Van Tent, B. (author)
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Vielva, P. (author)
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Villa, F. (author)
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Wade, L. A. (author)
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Wandelt, B. D. (author)
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Wehus, I. K. (author)
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White, M. (author)
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Yvon, D. (author)
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Zacchei, A. (author)
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Zibin, J. P. (author)
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Zonca, A. (author)
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(creator_code:org_t)
- 2016-09-20
- 2016
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 594
- Related links:
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https://doi.org/10.1...
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey, which includes more than twice the integration time of the nominal survey used for the 2013 release papers. The Planck full mission temperature data and a first release of polarization data on large angular scales measure the spectral index of curvature perturbations to be n(s) = 0.968 +/- 0.006 and tightly constrain its scale dependence to dn(s)/dln k = -0.003 +/- 0.007 when combined with the Planck lensing likelihood. When the Planck high-l polarization data are included, the results are consistent and uncertainties are further reduced. The upper bound on the tensor-to-scalar ratio is r(0).(002) < 0.11 (95% CL). This upper limit is consistent with the B-mode polarization constraint r < 0.12 (95% CL) obtained from a joint analysis of the BICEP2/Keck Array and Planck data. These results imply that V(phi) proportional to phi(2) and natural inflation are now disfavoured compared to models predicting a smaller tensor-to-scalar ratio, such as R-2 inflation. We search for several physically motivated deviations from a simple power-law spectrum of curvature perturbations, including those motivated by a reconstruction of the inflaton potential not relying on the slow-roll approximation. We find that such models are not preferred, either according to a Bayesian model comparison or according to a frequentist simulation-based analysis. Three independent methods reconstructing the primordial power spectrum consistently recover a featureless and smooth P-R (k) over the range of scales 0.008 Mpc(-1) less than or similar to k less than or similar to 0.1 Mpc(-1). At large scales, each method finds deviations from a power law, connected to a deficit at multipoles l approximate to 20-40 in the temperature power spectrum, but at an uncompelling statistical significance owing to the large cosmic variance present at these multipoles. By combining power spectrum and non-Gaussianity bounds, we constrain models with generalized Lagrangians, including Galileon models and axion monodromy models. The Planck data are consistent with adiabatic primordial perturbations, and the estimated values for the parameters of the base Lambda cold dark matter (Lambda CDM) model are not significantly altered when more general initial conditions are admitted. In correlated mixed adiabatic and isocurvature models, the 95% CL upper bound for the non-adiabatic contribution to the observed CMB temperature variance is vertical bar alpha(non-adi)vertical bar < 1.9%, 4.0%, and 2.9% for CDM, neutrino density, and neutrino velocity isocurvature modes, respectively. We have tested inflationary models producing an anisotropic modulation of the primordial curvature power spectrum finding that the dipolar modulation in the CMB temperature field induced by a CDM isocurvature perturbation is not preferred at a statistically significant level. We also establish tight constraints on a possible quadrupolar modulation of the curvature perturbation. These results are consistent with the Planck 2013 analysis based on the nominal mission data and further constrain slow-roll single-field inflationary models, as expected from the increased precision of Planck data using the full set of observations.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- cosmic background radiation
- cosmology: theory
- early Universe
- inflation
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ade, P. A. R.
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Aghanim, N.
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Arnaud, M.
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Arroja, F.
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Ashdown, M.
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Aumont, J.
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show more...
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Baccigalupi, C.
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Ballardini, M.
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Banday, A. J.
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Barreiro, R. B.
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Bartolo, N.
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Battaner, E.
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Benabed, K.
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Benoit, A.
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Benoit-Levy, A.
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Bernard, J. -P.
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Bersanelli, M.
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Bielewicz, P.
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Bock, J. J.
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Bonaldi, A.
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Bonavera, L.
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Bondi, J. R.
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Borrillu, J.
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Bouchet, F. R.
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Boulanger, F.
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Bucher, M.
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Burigana, C.
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Butler, R. C.
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Calabrese, E.
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Cardoso, J. -F.
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Catalano, A.
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Challinor, A.
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Chamballu, A.
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Chary, R. -R.
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Chiang, H. C.
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Christensen, P. ...
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Churchl, S.
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Clements, D. L.
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Colombi, S.
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Colombo, L. P. L ...
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Combet, C.
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Contreras, D.
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Couchot, F.
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Coulais, A.
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Crill, B. P.
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Curto, A.
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Cuttaia, F.
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Danese, L.
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Davies, R. D.
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Davis, R. J.
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de Bernardis, P.
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de Rosa, A.
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de Zotti, G.
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Delabrouillei, J ...
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Desert, F. -X.
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Diego, J. M.
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Dole, H.
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Donzelli, S.
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Dore, O.
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Douspis, M.
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Ducout, A.
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Dupac, X.
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Efstathiou, G.
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Elsner, F.
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Ensslin, T. A.
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Eriksen, H. K.
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Fergusson, J.
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Finelli, F.
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Forni, O.
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Frailis, M.
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Fraisse, A. A.
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Franceschi, E.
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Frejsel, A.
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Frolov, A.
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Galeotta, S.
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Galli, S.
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Ganga, K.
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Gauthier, C.
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Giard, M.
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Giraud-Heraud, Y ...
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Gjerlow, E.
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Gonzalez-Nuevo, ...
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Gorski, K. M.
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Gratton, S.
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Gregorio, A.
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Gruppuso, A.
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Gudmundsson, Jón ...
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Hamann, J.
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Handley, W.
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Hansen, F. K.
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Hanson, D.
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Harrison, D. L.
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Henrot-Versille, ...
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Hernandez-Montea ...
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Herranz, D.
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Hildebrandt, S. ...
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Hivon, E.
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Hobson, M.
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Holmes, W. A.
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Hornstrup, A.
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Hovest, W.
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Huang, Z.
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Huffenberger, K. ...
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Hurier, G.
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Jaffe, A. H.
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Jaffe, T. R.
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Jones, W. C.
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Juvela, M.
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Keihanen, E.
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Keskitalo, R.
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Kim, J.
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Kisner, T. S.
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Kneissl, R.
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Knoche, J.
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Kunz, M.
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Kurki-Suonio, H.
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Lagache, G.
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Lahteenmaki, A.
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Lamarre, J. -M.
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Lasenby, A.
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Lattanzi, M.
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Lawrence, C. R.
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Leonardi, R.
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Lesgourgues, J.
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Levrier, F.
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Lewis, A.
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Liguori, M.
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Lilje, P. B.
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Linden-Vornle, M ...
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Lopez-Caniego, M ...
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Lubin, P. M.
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Ma, Y. -Z.
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Macias-Perez, J. ...
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Maggio, G.
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Maino, D.
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Mandolesi, N.
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Mangilli, A.
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Maris, M.
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Martini, P. G.
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Martinez-Gonzale ...
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Masi, S.
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Matarrese, S.
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McGehee, P.
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Meinhold, P. R.
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Melchiorri, A.
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Mendes, L.
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Mennella, A.
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Migliaccio, M.
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Mitra, S.
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Miville-Deschene ...
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Molinari, D.
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Moneti, A.
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Montier, L.
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Morgante, G.
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Mortlock, D.
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Moss, A.
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Munchmeyer, M.
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Munshi, D.
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Murphy, J. A.
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Naselsky, P.
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Nati, F.
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Natoli, P.
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Netterfield, C. ...
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Norgaard-Nielsen ...
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Noviello, F.
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Novikov, D.
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Novikov, I.
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Oxborrow, C. A.
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Paci, F.
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Pagano, L.
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Pajot, F.
-
Paladini, R.
-
Pandolfi, S.
-
Paoletti, D.
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Pasian, F.
-
Patanchon, G.
-
Pearson, T. J.
-
Peiris, H. V.
-
Perdereau, O.
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Perotto, L.
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Perrotta, F.
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Pettorino, V.
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Piacentini, F.
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Piat, M.
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Pierpaoli, E.
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Pietrobon, D.
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Plaszczynski, S.
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Pointecouteau, E ...
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Polenta, G.
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Popa, L.
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Pratt, G. W.
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Prezeau, G.
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Prunet, S.
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Puget, J. -L.
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Rachen, J. P.
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Reach, W. T.
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Rebolo, R.
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Reinecke, M.
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Remazeilles, M.
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Renault, C.
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Renzi, A.
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Ristorcelli, I.
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Rocha, G.
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Rosset, C.
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Rossetti, M.
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Roudier, G.
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Rowan-Robinson, ...
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Rubino-Martin, J ...
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Rusholme, B.
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Sandri, M.
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Santos, D.
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Savelainen, M.
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Savini, G.
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Scott, D.
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Seiffert, M. D.
-
Shellard, E. P. ...
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Shiraishi, M.
-
Spencer, L. D.
-
Stolyarov, V.
-
Stompori, R.
-
Sudiwala, R.
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Sunyaev, R.
-
Sutton, D.
-
Suur-Uski, A. -S ...
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Sygnet, J. -F.
-
Tauber, J. A.
-
Terenzi, L.
-
Toffolatti, L.
-
Tomasi, M.
-
Tristram, M.
-
Trombetti, T.
-
Tucci, M.
-
Tuovinen, J.
-
Valenziano, L.
-
Valiviita, J.
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Van Tent, B.
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Vielva, P.
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Villa, F.
-
Wade, L. A.
-
Wandelt, B. D.
-
Wehus, I. K.
-
White, M.
-
Yvon, D.
-
Zacchei, A.
-
Zibin, J. P.
-
Zonca, A.
-
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