Thermodynamical fluctuations of meson fields for the Zimanyi-Moszkowski model

Journal Article · Thu May 01 00:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.2373· OSTI ID:496858

Su, R ^[1]; Long, T; Zhang, Y ^[2]; Yu, P K; Young, E C ^[3]

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1. China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080, People`s Republic of (China)
2. Department of Physics, Fudan University, Shanghai 200433, People`s Republic of (China)
3. Department of Physics and Materials Science, City University of Hong Kong (Hong Kong)

By using the real-time Green{close_quote}s function method with a pair cutoff approximation up to the second order, the thermodynamical fluctuation effects of meson fields on the Zimanyi-Moszkowski model are investigated. We find that in the fluctuation effects on the effective mass of the nucleon, the pressures are considerable in the low-baryon-density region and/or the high-temperature regions. The results of the Zimanyi-Moszkowski model and the Welecka model beyond the mean-field approximation are compared. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 496858
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DENSITY
FLUCTUATIONS
GREEN FUNCTION
MASS
MEAN-FIELD THEORY
MESONS
NUCLEAR MATTER
NUCLEONS
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
WALECKA MODEL