Quark number density at imaginary chemical potential and its extrapolation to large real chemical potential by the effective model

Junichi Takahashi, Junpei Sugano, Masahiro Ishii, Hiroaki Kouno, Masanobu Yahiro

研究成果: Contribution to journalConference article査読

1 被引用数 (Scopus)

抄録

We evaluate quark number densities at imaginary chemical potential by lattice QCD with cloverimproved two-flavor Wilson fermion. The quark number densities are extrapolated to the small real chemical potential region by assuming some function forms. The extrapolated quark number densities are consistent with those calculated at real chemical potential with the Taylor expansion method for the reweighting factors. In order to study the large real chemical potential region, we use the two-phase model consisting of the quantum hadrodynamics model for the hadron phase and the entanglement-PNJL model for the quark phase. The quantum hadrodynamics model is constructed to reproduce nuclear saturation properties, while the entanglement-PNJL model reproduces well lattice QCD data for the order parameters such as the Polyakov loop, the thermodynamic quantities and the screening masses. Then, we calculate the mass-radius relation of neutron stars and explore the hadron-quark phase transition with the two-phase model.

本文言語英語
論文番号187
ジャーナルProceedings of Science
Part F130500
出版ステータス出版済み - 2014
イベント32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, 米国
継続期間: 6 23 20146 28 2014

All Science Journal Classification (ASJC) codes

  • 一般

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