Emergent Sasaki-Einstein geometry and AdS/CFT

Robert J. Berman (), Tristan C. Collins () and Daniel Persson ()
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Robert J. Berman: Chalmers University of Technology
Tristan C. Collins: Massachusetts Institute of Technology
Daniel Persson: Chalmers University of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: 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.

Date: 2022
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DOI: 10.1038/s41467-021-27951-9

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