# ICHEP 2020

July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

## Electroweak monopoles and their cosmological implications

Jul 30, 2020, 10:45 AM
25m
virtual conference

#### virtual conference

Talk 08. Astro-particle Physics and Cosmology

### Speaker

Prof. Archil Kobakhidze (The University of Sydney)

### Description

We describe electroweak monopoles within the Born-Infeld extension of $𝑆𝑈(2)\times 𝑈(1)$ electroweak theory. We argue for topological stability of these monopoles and computed their mass in terms of the Born-Infeld mass parameters. We then propose a new mechanism for electroweak baryogenesis which takes advantage of the following salient features of the electroweak monopoles: (i) monopoles support extra CP violation in the topological sector of the electroweak theory; (ii) they mediate unsuppressed baryon number violating interactions; (iii) non-thermal production of monopoles during the electroweak phase transitions generates departure from thermal equilibrium. We demonstrate that the observed baryon asymmetry of the universe can be explained in our theory in the presence of electroweak monopoles of mass $𝑀∼10^{4}$ TeV

### Primary author

Prof. Archil Kobakhidze (The University of Sydney)

### Presentation materials

 ICHEP_2020_Kobakhidze.pdf ICHEP_2020_Kobakhidze.pptx