Eur. Phys. J. A (2015) 51: 27
https://doi.org/10.1140/epja/i2015-15027-x

Letter

SU(4) symmetry of the dynamical QCD string and genesis of hadron spectra

Institute of Physics, University of Graz, A-8010, Graz, Austria

^* e-mail: leonid.glozman@uni-graz.at

Received: 20 January 2015
Accepted: 20 February 2015
Published online: 4 March 2015

Abstract

A large degeneracy of mesons of a given spin has recently been discovered upon reduction of the quasi-zero modes of the Dirac operator in a dynamical lattice simulation. Here it is shown that a symmetry group is consistent with the observed degeneracy. It is argued that this symmetry group is a symmetry of the dynamical QCD string. Implications of this picture for a genesis of light hadron spectra are discussed.