Studying chiral imbalance using Chiral Perturbation Theory

Andrea Vioque-Rodríguez; Angel Gómez Nicola; Domènec Espriu

Studying chiral imbalance using Chiral Perturbation Theory

High Energy Physics - Phenomenology 2021-12-28 v1

Authors: Andrea Vioque-Rodríguez , Angel Gómez Nicola , Domènec Espriu

Abstract

We analize the most general low-energy effective lagrangian including local parity violating terms parametrized by an axial chemical potential $\mu_5$ . This result is obtained following the external source method, up to $\mathcal{O}(p^4)$ order in the chiral expansion for two light flavours. We show that the $\mathcal{O}(p^4)$ lagrangian includes new terms proportional to $\mu_5^2$ and new low-energy constants. Finally, the $\mu_5$ and temperature dependences of several observables related to the vacuum energy density are studied.

Keywords

chiral symmetry in hadron physics chiral perturbation theory classical field theory

Cite

@article{arxiv.2112.13038,
  title  = {Studying chiral imbalance using Chiral Perturbation Theory},
  author = {Andrea Vioque-Rodríguez and Angel Gómez Nicola and Domènec Espriu},
  journal= {arXiv preprint arXiv:2112.13038},
  year   = {2021}
}

Comments

Proceedings of the Workshop "PANIC2021"

Studying chiral imbalance using Chiral Perturbation Theory

Abstract

Keywords

Cite

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