Hint to Supersymmetry from GR Vacuum
Speaker: Dr. Otari Sakhelashvili (The University of Sydney)
Date/Time: Friday 26 July 2024, 15:00
Room: MPP, Garching - A.1.01/03 - Alps
Abstract:
General Relativity has a θ-vacuum structure, generated by Eguchi-Hanson instantons. The S-matrix formulation of the gravity suggests that the θ-vacuum structure must not be sustained by the theory. The above requirement defines Gravity CP problem. It can only be solved via chiral Spin-3/2 fermion, which realizes supergravity. By consistency, we predict spontaneously broken supersymmetry and R-axion. The axion gets mass exclusively from gravitational θ-vacuum. The R-axion could be a good dark matter candidate. We also find a constraint on spin-1/2 fermions which should not contribute to the chiral gravitational anomaly.
Based on: 2406.18402 [hep-th]