Chiral transition of fundamental and adjoint quarks
Abstract
The chiral symmetry breaking transition of quarks in the fundamental and adjoint representation is studied in a model where the gap equation contains two contributions, one containing a confining propagator and another corresponding to the exchange of onedressed dynamically massive gluons. When quarks are in the fundamental representation the confinement effect dominates the chiral symmetry breaking while the gluon exchange is suppressed due to the dynamical gluon mass effect in the propagator and in the coupling constant. In this case the chiral and deconfinement transition temperatures are approximately the same. For quarks in the adjoint representation, due to the larger Casimir eigenvalue, the gluon exchange is operative and the chiral transition happens at a larger temperature than the deconfinement one.
 Publication:

Physics Letters B
 Pub Date:
 January 2014
 DOI:
 10.1016/j.physletb.2013.12.042
 arXiv:
 arXiv:1310.7132
 Bibcode:
 2014PhLB..728..626C
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Lattice
 EPrint:
 12 pages, 1 figure, improved discussion