Unusual temperature behavior of the entropy of the antiferromagnetic spin state in nuclear matter with an effective finite range interaction

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.047305· OSTI ID:21067854

Isayev, A A ^[1]

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1. Kharkov Institute of Physics and Technology, Academicheskaya Street 1, Kharkov 61108 (Ukraine)

The unusual temperature behavior of the entropy of the antiferromagnetic (AFM) spin state in symmetric nuclear matter with the Gogny D1S interaction, being larger at low temperatures than the entropy of nonpolarized matter, is related to the dependence of the entropy on the effective masses of nucleons in a spin polarized state. The corresponding conditions for comparing the entropies of the AFM and nonpolarized states in terms of the effective masses are formulated, including the low and high temperature limits. It is shown that the unexpected temperature behavior of the entropy of the AFM spin state at low temperatures is caused by the violation of the corresponding low-temperature criterion.

• OSTI ID: 21067854
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.047305; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
EFFECTIVE MASS
ENTROPY
FINITE-RANGE INTERACTIONS
NUCLEAR MATTER
NUCLEAR TEMPERATURE
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
SPIN
SPIN ORIENTATION