Studying chiral imbalance using Chiral Perturbation Theory
| Autor: | Andrea Vioque-Rodríguez, Ángel Gómez Nicola, Domenec Espriu |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Popis: | 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. Comment: Proceedings of the Workshop "PANIC2021" |
| Databáze: | OpenAIRE |
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