# Partikeldagarna 2020 (virtual), organised by Uppsala

Nov 23 – 25, 2020
Europe/Stockholm timezone

## A careful look at phase transitions in the Standard Model Effective Field Theory (SMEFT)

Nov 25, 2020, 9:45 AM
15m

### Speaker

Dr José Eliel Camargo Molina (Uppsala University)

### Description

It is well known that quantum and temperature corrections to the scalar potential are important when considering vacuum dynamics and phase transition phenomena. It is also true that a naive application of perturbation theory gives gauge dependent results. Further complications arise when one is considering dim $d>4$ operators in the Lagrangian.
In this work we present an extended prescription to consistently perform such calculations in a gauge invariant way, and apply it to the determination of the strength of the Electroweak Phase Transition in the SMEFT (Standard Model Effective Field Theory). In particular we discuss whether a first order phase transition is consistent with current limits on the SMEFT coefficients coming from all available data.

Abstract Track Astroparticle physics

### Primary authors

Dr José Eliel Camargo Molina (Uppsala University) Rikard Enberg (Uppsala University) Mr Johan Löfgren (Uppsala University)

### Presentation materials

 PartikelDagarna.pdf Slides with hand-written content.pdf