Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10722375 | Physics Letters B | 2012 | 6 Pages |
Abstract
We investigate the interplay between the ZNc symmetry and the emergence of the quarkyonic phase, adding the flavor-dependent complex chemical potentials μf=μ+iTθf with (θf)=(0,θ,âθ) to the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model. When θ=0, the PNJL model with the μf agrees with the standard PNJL model with the real chemical potential μ. When θ=2Ï/3, meanwhile, the PNJL model with the μf has the ZNc symmetry exactly for any real μ, so that the quarkyonic phase exists at small T and large μ. Once θ varies from 2Ï/3, the quarkyonic phase exists only on a line of T=0 and μ larger than the dynamical quark mass, and the region at small T and large μ is dominated by the quarkyonic-like phase in which the Polyakov loop is small but finite.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Yuji Sakai, Hiroaki Kouno, Takahiro Sasaki, Masanobu Yahiro,