Gluon condensate in a pion superfluid beyond the mean-field approximation

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.038201· OSTI ID:21499534

Yin, Jiang; Pengfei, Zhuang ^[1]

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1. Physics Department, Tsinghua University, Beijing 100084 (China)

We study gluon condensate in a pion superfluid by calculating the equation of state of the system in the Nambu-Jona-Lasinio model. While in mean-field approximation the growing pion condensate leads to an increasing gluon condensate, meson fluctuations reduce the gluon condensate, and the broken scalar symmetry can be smoothly restored at finite isospin density.

• OSTI ID: 21499534
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
BOSONS
CALCULATION METHODS
COMPUTERIZED SIMULATION
DENSITY
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
FLUCTUATIONS
GLUON CONDENSATION
HADRONS
ISOSPIN
MEAN-FIELD THEORY
MESONS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PIONS
PSEUDOSCALAR MESONS
SIMULATION
SUPERFLUIDITY
SYMMETRY
SYMMETRY BREAKING
VARIATIONS