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Prog. Theor. Phys. Vol. 86 No. 1 (1991) pp. 57-71

[ Full Text PDF : FREE ACCESS (788K) ]

Phase Transition of Hot Neutron Matter to π0-Condensed State

Mariko Takahara, Tatsuyuki Takatsuka* and Katsuhiko Sato**

Doshisha Women's College of Liberal Arts, Tanabe-cho, Kyoto 610-33
*College of Humanities and Social Sciences, Iwate University, Morioka 020
**Department of Physics, University of Tokyo, Tokyo 113

(Received April 8, 1991)

Abstract:

We investigate the equation of state (EOS) of hot neutron matter with π0-condensed state on the basis of the Alternating-Layer-Spin model by solving the Hartree-Fock equation at finite temperature. We find that the phase transition to π0-condensed state is suppressed considerably with temperature. We first calculate the entropy and specific heat of π0-condensed state and find that they are much lower than those of normal state. We also find that the effective mass of nucleons in normal and π0-condensed state is almost independent of temperature. The application to supernova explosions is discussed in detail, especially the evolution of the collapsing core along the iso-entropy line and its effects on the pressure.


URL : http://ptp.ipap.jp/link?PTP/86/57/
DOI : 10.1143/PTP.86.57

[ Full Text PDF : FREE ACCESS (788K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Supplement No.112 (1993) pp. 197-219 :
    Chapter VII. Neutral Pion Condensation in Hot and Dense Nuclear Matter
    Teiji Kunihiro, Tatsuyuki Takatsuka and Ryozo Tamagaki

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