Emergent Sasaki-Einstein geometry and AdS/CFT

Daniel Persson,Robert J Berman,Tristan C Collins

doi:10.1038/s41467-021-27951-9

Daniel Persson, Robert J Berman + Show 1 more

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https://doi.org/10.1038/s41467-021-27951-9

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Abstract

A central problem in any quantum theory of gravity is to explain the emergence of the classical spacetime geometry in some limit of a more fundamental, microscopic description of nature. The gauge/gravity-correspondence provides a framework in which this problem can, in principle, be addressed. This is a holographic correspondence which relates a supergravity theory in five-dimensional Anti-deSitter space to a strongly coupled superconformal gauge theory on its 4-dimensional flat Minkowski boundary. In particular, the classical geometry should therefore emerge from some quantum state of the dual gauge theory. Here we confirm this by showing how the classical metric emerges from a canonical state in the dual gauge theory. In particular, we obtain approximations to the Sasaki-Einstein metric underlying the supergravity geometry, in terms of an explicit integral formula involving the canonical quantum state in question. In the special case of toric quiver gauge theories we show that our results can be computationally simplified through a process of tropicalization.

Highlights

A central problem in any quantum theory of gravity is to explain the emergence of the classical spacetime geometry in some limit of a more fundamental, microscopic description of nature
It is expected that a quantum theory of gravity should be able to explain the emergence of the classical spacetime geometry in some limit of a more fundamental, microscopic description of Nature
Recall that the lowenergy dynamics of a general supersymmetric gauge theory is controlled by the moduli space of classical vacua M: The space M may be defined as the critical points, modulo complex gauge equivalence, of the superpotential W appearing in the (UV) Lagrangian of the gauge theory[11,12]

Summary

Introduction

A central problem in any quantum theory of gravity is to explain the emergence of the classical spacetime geometry in some limit of a more fundamental, microscopic description of nature. The gauge/gravity-correspondence provides a framework in which this problem can, in principle, be addressed This is a holographic correspondence which relates a supergravity theory in five-dimensional Anti-deSitter space to a strongly coupled superconformal gauge theory on its 4-dimensional flat Minkowski boundary. The AdS/CFT correspondence relates a supergravity theory in the fivedimensional Anti-deSitter space AdS5 to a strongly coupled, rank N, superconformal gauge theory on the 4-dimensional flat boundary R3;1 of AdS5. The vacuum moduli space can be described in purely complex algebro-geometric terms[7,8,9]

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