ADM reduction of IIB on $H^{p,q}$ and dS braneworld

TL;DR

This paper introduces a new ADM-based Kaluza-Klein reduction scheme motivated by AdS/CFT, applied to IIB supergravity on hyperboloidal spaces, leading to (A)dS braneworlds with potential cosmological and black hole applications.

Contribution

A novel ADM decomposition-based reduction method for supergravity, enabling the realization of (A)dS braneworlds from IIB supergravity on hyperboloidal spaces.

Findings

Realization of (A)dS braneworlds from IIB supergravity

Application of the scheme to hyperboloidal $ ext{H}^{p,q}$ spaces

Potential implications for cosmology and black hole physics

Abstract

We propose a new Kaluza-Klein reduction scheme based on ADM decomposition. The scheme has been motivated by AdS/CFT, especially by how the worldvolume theory should appear from the supergravity side. We apply the scheme to IIB supergravity reduced on a 5D hyperboloidal $\cH^5$ space, and show that an (A)dS "braneworld" is be realized after further reduction to 4D. We comment on applications to cosmology and black hole physics. In particular, the scheme should provide a proper paradigm for black hole physics.