Nambu-Goldstone mesons in strong magnetic field
High Energy Physics - Phenomenology
2014-01-21 v1
Abstract
We study the q \bar q structure embedded in chiral mesons in response to external magnetic fields, using the chiral Lagrangian with q \bar q degrees of freedom derived earlier. We show that GMOR relations hold true for neutral chiral mesons, while they are violated for the charged ones for eB>sigma=0.2 GeV^2. The standard chiral perturbation theory also fails in this region. Masses of pi^+ and pi^0 mesons are calculated and compared to lattice data.
Cite
@article{arxiv.1306.2232,
title = {Nambu-Goldstone mesons in strong magnetic field},
author = {V. D. Orlovsky and Yu. A. Simonov},
journal= {arXiv preprint arXiv:1306.2232},
year = {2014}
}
Comments
21 pages, 3 figures