Skip to main content

Research Repository

Advanced Search

Real-time fermions for baryogenesis simulations

Saffin, Paul M.; Tranberg, Anders

Real-time fermions for baryogenesis simulations Thumbnail


Authors

PAUL SAFFIN PAUL.SAFFIN@NOTTINGHAM.AC.UK
Professor of Physics

Anders Tranberg



Abstract

We study how to numerically simulate quantum fermions out of thermal equilibrium, in the context of electroweak baryogenesis. We find that by combining the lattice implementation of Aarts and Smit [1] with the "low cost" fermions of Borsanyi and Hindmarsh [2], we are able to describe the dynamics of a classical bosonic system coupled to quantum fermions, that correctly reproduces anomalous baryon number violation. To demonstrate the method, we apply it to the 1+1 dimensional axial U(1) model, and perform simulations of a fast symmetry breaking transition. Compared to solving all the quantum mode equations as in [1], we find that this statistical approach may lead to a significant gain in computational time, when applied to 3+1 dimensional physics.

Citation

Saffin, P. M., & Tranberg, A. (2011). Real-time fermions for baryogenesis simulations. Journal of High Energy Physics, 2011(7), https://doi.org/10.1007/JHEP07%282011%29066

Journal Article Type Article
Acceptance Date Jul 1, 2011
Publication Date Jul 14, 2011
Deposit Date Apr 21, 2017
Publicly Available Date Mar 29, 2024
Journal Journal of High Energy Physics
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2011
Issue 7
DOI https://doi.org/10.1007/JHEP07%282011%29066
Public URL https://nottingham-repository.worktribe.com/output/707786
Publisher URL http://link.springer.com/article/10.1007%2FJHEP07%282011%29066

Files





You might also like



Downloadable Citations