Speaker
Andrea Vioque-Rodríguez
(Universidad Complutense de Madrid)
Description
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. The same procedure can be followed to incorporate isospin chemical potential.
Primary authors
Andrea Vioque-Rodríguez
(Universidad Complutense de Madrid)
Prof.
Angel Gómez Nicola
(Universidad Complutense de Madrid)
