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A Swampland Tour, From Global Symmetries to Axion Physics

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If you have a question about this talk, please contact Francesca Chadha-Day .

Please note this is an internal colloquium for members of the University of Cambridge and others with strong connections to the HEP and GR groups

The Swampland program aims to distinguish effective quantum field theories that can potentially arise within UV-complete quantum gravity theories (“the Landscape”) from those that cannot (“the Swampland”). The most well-established such criterion is that theories of quantum gravity never have exact global symmetries. I will discuss some generalizations and consequences of this idea. In particular, I will discuss work in progress (with Heidenreich, McNamara, Montero, Rudelius, and Valenzuela) on how axion fields often play a crucial role in banishing global symmetries from a theory, with potential phenomenological implications.

This talk is part of the Theoretical Physics Colloquium series.

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