Variational calculation for the nuclear equation of state toward supernova explosions

Masatoshi Takano; Hiroaki Kanzawa; Kazuhiro Oyamatsu; Kohsuke Sumiyoshi

Variational calculation for the nuclear equation of state toward supernova explosions

Masatoshi Takano^*, Hiroaki Kanzawa, Kazuhiro Oyamatsu, Kohsuke Sumiyoshi

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The equation of state (EOS) is calculated for uniform nuclear matter at zero and finite temperatures with the variational method. Making use of uncertainty of the three-body nuclear force, adjustable parameters in the nuclear EOS are tuned so that the Thomas-Fermi calculations for β-stable nuclei with the EOS reproduce the empirical data. The calculated nuclear properties imply that larger symmetry energy of the EOS is preferable to reproduce the empirical β-stability line. The expectation value of the nuclear Hamiltonian caused by the 2π-exchange three-body nuclear force is uncertain and related to the symmetry energy.

Original language	English
Pages (from-to)	2455-2458
Number of pages	4
Journal	Modern Physics Letters A
Volume	23
Issue number	27-30
Publication status	Published - 2008 Sept 30

Keywords

Nuclear EOS
Nuclear matter
Symmetry energy

ASJC Scopus subject areas

Nuclear and High Energy Physics
Astronomy and Astrophysics
Physics and Astronomy(all)

Cite this

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keywords = "Nuclear EOS, Nuclear matter, Symmetry energy",

author = "Masatoshi Takano and Hiroaki Kanzawa and Kazuhiro Oyamatsu and Kohsuke Sumiyoshi",

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language = "English",

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T1 - Variational calculation for the nuclear equation of state toward supernova explosions

AU - Takano, Masatoshi

AU - Kanzawa, Hiroaki

AU - Oyamatsu, Kazuhiro

AU - Sumiyoshi, Kohsuke

PY - 2008/9/30

Y1 - 2008/9/30

N2 - The equation of state (EOS) is calculated for uniform nuclear matter at zero and finite temperatures with the variational method. Making use of uncertainty of the three-body nuclear force, adjustable parameters in the nuclear EOS are tuned so that the Thomas-Fermi calculations for β-stable nuclei with the EOS reproduce the empirical data. The calculated nuclear properties imply that larger symmetry energy of the EOS is preferable to reproduce the empirical β-stability line. The expectation value of the nuclear Hamiltonian caused by the 2π-exchange three-body nuclear force is uncertain and related to the symmetry energy.

AB - The equation of state (EOS) is calculated for uniform nuclear matter at zero and finite temperatures with the variational method. Making use of uncertainty of the three-body nuclear force, adjustable parameters in the nuclear EOS are tuned so that the Thomas-Fermi calculations for β-stable nuclei with the EOS reproduce the empirical data. The calculated nuclear properties imply that larger symmetry energy of the EOS is preferable to reproduce the empirical β-stability line. The expectation value of the nuclear Hamiltonian caused by the 2π-exchange three-body nuclear force is uncertain and related to the symmetry energy.

KW - Nuclear EOS

KW - Nuclear matter

KW - Symmetry energy

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VL - 23

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JO - Modern Physics Letters A

JF - Modern Physics Letters A

IS - 27-30

ER -

Variational calculation for the nuclear equation of state toward supernova explosions

Abstract

Keywords

ASJC Scopus subject areas

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