Restoration of chiral symmetry in a model with dynamical spontaneous symmetry breaking at finite temperature and density
- Chinese Center of Advanced Science and Technology (World Laboratory), Box 8730, Beijing 100080 (China) Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430070 (China)
The chiral-symmetry-restoring transition in a model proposed by Lurie is investigated at finite temperature and density. A method is given to establish the self-consistency equation satisfied by the order parameter and a convenient scheme is constructed for calculating the equation of state approximately. Study of the phase diagram shows the existence of a critical point separating the first-order from the second-order chiral phase transition. By calculating the energy density versus temperature, the order of the chiral phase transition is confirmed. A careful analysis of isotherms of pressure versus net baryon-number density suggests the existence of overheated and overcooled metastable states and the coexistence of a broken phase and a normal phase.
- OSTI ID:
- 6091889
- Journal Information:
- Physical Review, D (Particles Fields); (United States), Vol. 44:11; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LAGRANGIAN FIELD THEORY
CHIRAL SYMMETRY
BARYON NUMBER
ENERGY DENSITY
EQUATIONS OF MOTION
EQUATIONS OF STATE
PHASE TRANSFORMATIONS
QUANTUM CHROMODYNAMICS
SYMMETRY BREAKING
TEMPERATURE DEPENDENCE
DIFFERENTIAL EQUATIONS
EQUATIONS
FIELD THEORIES
PARTIAL DIFFERENTIAL EQUATIONS
QUANTUM FIELD THEORY
SYMMETRY
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662110 - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)