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Träfflista för sökning "WFRF:(Wyllard Niclas 1971) srt2:(2008)"

Search: WFRF:(Wyllard Niclas 1971) > (2008)

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1.
  • Babalic, M., et al. (author)
  • Toward relating the kappa-symmetric and pure-spinor versions of the supermembrane
  • 2008
  • In: Journal of High Energy Physics. - 1029-8479 .- 1126-6708. ; :10, s. 15-
  • Journal article (peer-reviewed)abstract
    • We study the relation between the kappa-symmetric formulation of the supermembrane in eleven dimensions and the pure-spinor version. Recently, Berkovits related the Green-Schwarz and pure-spinor superstrings. In this paper, we attempt to extend this method to the supermembrane. We show that it is possible to reinstate the reparameterisation constraints in the pure-spinor formulation of the supermembrane by introducing a topological sector and performing a similarity transformation. The resulting BRST charge is then of conventional type and is argued to be (related to) the BRST charge of the kappa-symmetric supermembrane in a formulation where all second class constraints are 'gauge unfixed' to first class constraints. In our analysis we also encounter a natural candidate for a (non-covariant) supermembrane analogue of the superstring b ghost.
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2.
  • Henningson, Måns, 1964, et al. (author)
  • Zero-energy bound states of N=4 SYM on T^3: S-duality and the mapping class group
  • 2008
  • In: Journal of High Energy Physics. - : Springer Science and Business Media LLC. - 1029-8479 .- 1126-6708. ; 0804:4, s. 066-
  • Journal article (peer-reviewed)abstract
    • We continue our studies of the low-energy spectrum of N = 4 super-Yang-Mills theory on a spatial three-torus. In two previous papers, we computed the spectrum of normalizable zero-energy states for all choices of gauge group and all values of the electric and magnetic 't Hooft fluxes, and checked its invariance under the SL2(Z) S-duality group. In this paper, we refine the analysis by also decomposing the space of bound states into irreducible unitary representations of the SL3(Z) mapping class group of the three-torus. We perform a detailed study of the S-dual pairs of theories with gauge groups Spin(2n+1) and Sp(2n). The predictions of S-duality (which commutes with the mapping class group) are fulfilled as expected, but the proof requires some surprisingly intricate combinatorial infinite product identities.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Wyllard, Niclas, 197 ... (2)
Henningson, Måns, 19 ... (1)
Babalic, M. (1)
University
Chalmers University of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2008 (2)Undo refine

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