Theory Seminars

Gravity, Global Symmetries, and the Axion Quality Problem

by James Alvey (King's College, London)

Europe/Madrid
IFAE Virtual Seminar Room (IFAE)

IFAE Virtual Seminar Room

IFAE

https://zoom.us/j/128758171
Description

Continuous global symmetries are expected to be broken by gravity, which can lead to important phenomenological consequences. A prime example is the threat that this poses to the viability of the Peccei-Quinn solution to the strong CP problem. In this regard, wormholes are a way to be precise and quantitative about the importance of global symmetry breaking by gravity, and the subsequent implications. In this talk, I will review the status of gravitational symmetry breaking, wormholes and global symmetries. I will also discuss some new results regarding the relevance of these solutions to multi-Goldstone boson scenarios and a simple string-inspired model.

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