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Vacuum stability and phase transitions: A rich source for fascinating math, physics and phenomenology

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If you have a question about this talk, please contact Joseph Davighi .

In this talk I will approach the subject of vacuum stability from three different perspectives: Setting constraints in theories with many scalars, systematizing vacuum stability studies of generic models and the details of using phase transitions in the early universe as a phenomenological test. After setting up the basics of vacuum decay and why it matters as a phenomenological test of BSM theories, I will introduce the new version of Vevacious (a code tackling the whole pipeline from Lagrangian to estimation of vacuum decay rates) and how it is being used alongside cutting-edge global fits with the GAMBIT framework. Lastly I will talk about how phase transitions can also lead to phenomenological tests of inflationary and cosmology models with an overview of the current state-of-the-art, including the current open questions I find most interesting and crucial.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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