IS THE U(1) AXIAL SYMMETRY RESTORED ABOVE THE SU(L)CIRCLE-TIMES-SU(L)CHIRAL TRANSITION

Authors
MEGGIOLARO E
Citation
E. Meggiolaro, IS THE U(1) AXIAL SYMMETRY RESTORED ABOVE THE SU(L)CIRCLE-TIMES-SU(L)CHIRAL TRANSITION, Zeitschrift fur Physik. C, Particles and fields, 62(4), 1994, pp. 669-677
Citations number
20
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
62
Issue
4
Year of publication
1994
Pages
669 - 677
Database
ISI
SICI code
0170-9739(1994)62:4<669:ITUASR>2.0.ZU;2-U
Abstract
We discuss an effective Lagrangian model in which the U(1) chiral symm etry is restored above the SU(L) X SU(L) chiral phase transition (L be ing the number of light flavours) and the topological susceptibility c hi(YM) of the pure Yang-Mills theory drops to zero above the chiral tr ansition. A new order parameter is introduced for the U(1) chiral symm etry and a new ''exotic'' particle becomes relevant at high temperatur es.