Induced symmetry breaking and a new phase of hadronic matter at high density

Details Induced symmetry breaking and a new phase of hadronic matter at high density Induced symmetry breaking and a new phase of hadronic matter at high density

1998-06-19

arxiv.org/abs/hep-ph/9806422v1

Nucl.Phys. A642 (1998) 96-101

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 5 figures, Talk presented at the workshop ''QCD at finite baryon density'', Zif, Bielefeld, April 27-30, 1998, submit

Scientific paper

10.1016/S0375-9474(98)00504-1

The notion induced symmetry breaking (ISB) is introduced as a generalization of the spontaneous symmetry breaking mechanism and is illustrated in a simple two flavor spin model. In the case of QCD at finite baryon density, I argue that the quark interaction induced by zero sound satisfies the prerequisites which are necessary for a ISB scenario. In this scenario, the quark condensate sharply drops at the critical value of the chemical potential in coincidence with a rapid increase of the baryon density. The spectrum of the light particles is discussed below and above this phase transition. The consequences of the ISB mechanism for heavy ion collisions are briefly addressed.

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