7-11 October 2019
Facultad de Ciencias Físicas, Universidad Complutense de Madrid
Europe/Madrid timezone

Chiral perturbation theory vs. Linear σ model in a chiral imbalance medium

8 Oct 2019, 11:30
35m
Aula M2 (Facultad de Ciencias Físicas, Universidad Complutense de Madrid)

Aula M2

Facultad de Ciencias Físicas, Universidad Complutense de Madrid

Plaza de Ciencias, 1 Ciudad Universitaria 28040 Madrid, Spain

Speaker

Prof. Vladimir Andrianov (Saint Petersburg State University)

Description

We compare Chiral Perturbation Theory (ChPT) and the Linear Sigma Model
(LSM) as realizations of low energy QCD for light mesons in a chirally imbalanced
medium. The relations between the phenomenological low-energy constants of the
Chiral Lagrangian and the corresponding constants of the Linear Sigma Model are
established as well as the expressions for the decay constant of the pi-meson in
the medium and the mass of the a_0 -meson. In the large Nc count taken from
QCD the correspondence of ChPT and LSM is remarkably good and give a solid
ground for search of chiral imbalance manifestation in pion physics. A possible
experimental detection of chiral imbalance tracks (and therefore a phase with
local parity breaking) in the charged pion decays inside the fireball is outlined

Primary authors

Prof. Vladimir Andrianov (Saint Petersburg State University) Prof. Alexandr Andrianov (Saint Petersburg State University) Prof. Domenec Espriu (University of Barcelona)

Presentation Materials

There are no materials yet.
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×