Thermodynamical fluctuations of meson fields for a quantum hadrodynamics model

Journal Article · Tue Feb 28 23:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1265· OSTI ID:6473670

Su, R ^[1]; Long, T; Zhang, Y ^[2]

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1. China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730 (China) Department of Physics, Fudan University, Shanghai 200433 (China)
2. Department of Physics, Fudan University, Shanghai 200433 (China)

Using the real-time Green's-function method with a pair-cutoff approximation up to second order, the thermodynamical fluctuation effects of meson fields on the QHD-II model are studied. We find that the fluctuation effects of meson fields, in particular, the [pi] meson field, on saturation energy, effective mass of nucleon, and pressure are remarkable in the low-density region and/or high-temperature region. The results given by the QHD-I and QHD-II models are compared. The value of the critical point of the liquid-gas phase transition for the QHD-II model is given.

• OSTI ID: 6473670
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:3; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663120* -- Nuclear Structure Models & Methods-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
ELEMENTARY PARTICLES
FLUCTUATIONS
FUNCTIONS
GREEN FUNCTION
HADRONS
MATHEMATICAL MODELS
MEAN-FIELD THEORY
MESONS
PARTICLE MODELS
PHASE TRANSFORMATIONS
SATURATION
THERMODYNAMICS
VARIATIONS