2021/12/24 by Andrea Vioque-Rodríguez, Vioque-Rodríguez, Andrea, Angel Gómez Nicola +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.2112.13038
Proceedings of the Workshop "PANIC2021"
arxiv created 2021/12/24 · arxiv updated 2021/12/28
We analize the most general low-energy effective lagrangian including local parity violating terms parametrized by an axial chemical potential μ5. This result is obtained following the external source method, up to O(p4) order in the chiral expansion for two light flavours. We show that the O(p4) lagrangian includes new terms proportional to μ52 and new low-energy constants. Finally, the μ5 and temperature dependences of several observables related to the vacuum energy density are studied.