Time-dependent cosmologies and their duals

Sumit R. Das; Jeremy Michelson; K. Narayan; Sandip P. Trivedi

doi:10.1103/PhysRevD.74.026002

Time-dependent cosmologies and their duals

Sumit R. Das, Jeremy Michelson, K. Narayan, Sandip P. Trivedi

Research output: Contribution to journal › Article › peer-review

96 Scopus citations

Abstract

We construct a family of solutions in IIB supergravity theory. These are time-dependent or depend on a light-like coordinate and can be thought of as deformations of AdS5×S5. Several of the solutions have singularities. The light-like solutions preserve 8 supersymmetries. We argue that these solutions are dual to the N=4 gauge theory in a 3+1 dimensional space-time with a metric and a gauge coupling that is varying with time or the light-like direction, respectively. This identification allows us to map the question of singularity resolution to the dual gauge theory.

Original language	English
Article number	026002
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	74
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevD.74.026002
State	Published - 2006

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.74.026002

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AB - We construct a family of solutions in IIB supergravity theory. These are time-dependent or depend on a light-like coordinate and can be thought of as deformations of AdS5×S5. Several of the solutions have singularities. The light-like solutions preserve 8 supersymmetries. We argue that these solutions are dual to the N=4 gauge theory in a 3+1 dimensional space-time with a metric and a gauge coupling that is varying with time or the light-like direction, respectively. This identification allows us to map the question of singularity resolution to the dual gauge theory.

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Time-dependent cosmologies and their duals

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