Time-dependent backgrounds from supergravity with gauged non-compact R-symmetry

Behrndt, Klaus; Cvetic, Mirjam

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学術論文

Time-dependent backgrounds from supergravity with gauged non-compact R-symmetry

MPS-Authors

Behrndt, Klaus
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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51003.pdf
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引用

Behrndt, K., & Cvetic, M. (2003). Time-dependent backgrounds from supergravity with gauged non-compact R-symmetry. Classical and Quantum Gravity, 20(19), 4177-4194.

引用: https://hdl.handle.net/11858/00-001M-0000-0013-52F1-F

要旨

We obtain a general class of time-dependent, asymptotically de Sitter backgrounds which solve the first order bosonic equations that extremize the action for supergravity with gauged non-compact R-symmetry. These backgrounds correspond only to neutral fields with the correct sign of kinetic energy. Within N=2 five-dimensional supergravity with vector-superfields we provide examples of multi-centered charged black holes in asymptotic de Sitter space, whose spatial part is given by a timedependent hyper-Kähler space. Reducing these backgrounds to four dimensions yields asymptotically de Sitter multi-centered charged black hole backgrounds and we show that they are related to an instanton configuration by a massive T-duality over time. Within N=2 gauged supergravity in four (and five)-dimensions with hyper-multiplets there could also be neutral cosmological backgrounds that are regular and correspond to the different de Sitter spaces at early and late times.