Speaker
Győző Kovács
(University of Wrocław & Wigner RCP)
Description
CP violation is known to emerge at finite topological angle, including $\theta=\pi$, which can be related to a negative quark mass parameter. Such a phase with nonstrange and strange eta condensates was indeed identified also in the Columbia plot in the presence of the axial anomaly [2410.08185]. However, anomaly terms corresponding to different topological charge give rise to different behavior in this region. We discuss the effect of higher-order anomalous terms in an effective model framework, focusing on the emergence of CP-violating solutions and their stability. We show that, while eta condensates emerge in several scenarios, such a solution might be associated only with local minima.
Primary author
Győző Kovács
(University of Wrocław & Wigner RCP)
Co-authors
Fabian Rennecke
(Giessen U & HFHF)
Francesco Giacosa
(Jan Kochanowski University)
Peter Kovacs
(Wigner RCP)
Robert Pisarski
(BNL)
