Warped branches of flux compactifications

Details Warped branches of flux compactifications Warped branches of flux compactifications

2012-02-16

arxiv.org/abs/1202.3525v1

Phys. Rev. D 85, 064027 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

25 pages, 2 figures

Scientific paper

10.1103/PhysRevD.85.064027

We consider Freund-Rubin-type compactifications which are described by (p+q)-dimensional Einstein gravity with a positive cosmological constant and a q-form flux. Using perturbative expansions of Kinoshita's ansatz for warped dS_pxS^q and AdS_pxS^q spacetimes, we obtain analytical solutions describing the warped branches and their respective phase spaces. These equations are given by inhomogeneous Gegenbauer differential equations which can be solved by the Green's function method. The requirement that the Green's functions are regular provides constraints which determine the structure of the phase space of the warped branches. We apply the perturbation results to calculate the thermodynamic variables for the warped dS_pxS^q branch. In particular, the first law of thermodynamics can be reproduced using this method.

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