T-Duality and Penrose limits of spatially homogeneous and inhomogeneous cosmologies

Details T-Duality and Penrose limits of spatially homogeneous and inhomogeneous cosmologies T-Duality and Penrose limits of spatially homogeneous and inhomogeneous cosmologies

2003-03-10

arxiv.org/abs/gr-qc/0303038v2

Phys.Rev. D68 (2003) 063517

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 4 figures. Discussion on non-abelian T-duality expanded

Scientific paper

10.1103/PhysRevD.68.063517

Penrose limits of inhomogeneous cosmologies admitting two abelian Killing vectors and their abelian T-duals are found in general. The wave profiles of the resulting plane waves are given for particular solutions. Abelian and non-abelian T-duality are used as solution generating techniques. Furthermore, it is found that unlike in the case of abelian T-duality, non-abelian T-duality and taking the Penrose limit are not commutative procedures.

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