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

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number187
JournalProceedings of Science
VolumePart F130500
Publication statusPublished - Jan 1 2014
Event32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States
Duration: Jun 23 2014Jun 28 2014

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extrapolation
quarks
quantum chromodynamics
neutron stars
screening
fermions
saturation
thermodynamics
radii
expansion

All Science Journal Classification (ASJC) codes

  • General

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Quark number density at imaginary chemical potential and its extrapolation to large real chemical potential by the effective model. / Takahashi, Junichi; Sugano, Junpei; Ishii, Masahiro; Kouno, Hiroaki; Yahiro, Masanobu.

In: Proceedings of Science, Vol. Part F130500, 187, 01.01.2014.

Research output: Contribution to journalConference article

Takahashi, Junichi ; Sugano, Junpei ; Ishii, Masahiro ; Kouno, Hiroaki ; Yahiro, Masanobu. / Quark number density at imaginary chemical potential and its extrapolation to large real chemical potential by the effective model. In: Proceedings of Science. 2014 ; Vol. Part F130500.
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