Search: onr:"swepub:oai:DiVA.org:kth-299681" >
Cosmology at the to...
Cosmology at the top of the alpha ' tower
-
- Quintin, Jerome (author)
- Max Planck Inst Gravitat Phys, Albert Einstein Ins, Muhlenberg 1, D-14476 Potsdam, Germany.
-
- Bernardo, Heliudson (author)
- McGill Univ, Dept Phys, Ernest Rutherford Phys Bldg,3600 Rue Univ, Montreal, PQ H3A 2T8, Canada.
-
- Franzmann, Guilherme (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Nordita SU
-
Max Planck Inst Gravitat Phys, Albert Einstein Ins, Muhlenberg 1, D-14476 Potsdam, Germany McGill Univ, Dept Phys, Ernest Rutherford Phys Bldg,3600 Rue Univ, Montreal, PQ H3A 2T8, Canada. (creator_code:org_t)
- Springer Nature, 2021
- 2021
- English.
-
In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :7
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- The cosmology of the fully alpha ' -corrected duality-invariant action for the Neveu-Schwarz sector of string theory is revisited, with special emphasis on its coupling to matter sources. The role of the duality covariant pressure and dilatonic charge of the matter sector is explored in various contexts, from the low-curvature regime to non-perturbative solutions in alpha '. We comment on how an infinite tower of alpha ' corrections allows for fixed-dilaton de Sitter solutions, even in vacuum. We further investigate the necessary conditions for accelerated expansion in the Einstein frame, as well as for non-singular bounces that could resolve the big bang singularity. In particular, explicit examples are constructed, which show that the tower of alpha ' corrections may support an Einstein-frame non-singular cosmological bouncing background, even when the matter sector respects the null energy condition.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Cosmology of Theories beyond the SM
- String Duality
- Spacetime Singularities
- Superstring Vacua
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database