Speaker
Domenec Espriu
(Universitat de barcelona)
Description
We investigate dynamical parity violation in dense baryon matter in the framework of effective quark models. Dynamical parity violation can appear in models with at least two scalar and two pseudoscalar fields, where both scalar fields are condensed at normal zero-density conditions. For certain regions of the low-energy constants, one of pseudoscalar fields can then also condense at some critical value of the baryon density. The phenomenon results in mixing of the scalar and pseudoscalar physical degrees of freedom, hence giving rise to manifest parity violation in the decays. We discuss the implications and possible experimental signatures for parity violation in strong interactions in future experiments with heavy-ion collisions. We also analyze the persistence of this phenomenon at finite temperature and its relevance in connection with the Vafa-Witten arguments against the possibility of spontaneous parity breaking.
Authors
Alexander Andrianov
(Universitat de Barcelona)
Domenec Espriu
(Universitat de barcelona)