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Existence of the critical point in finite density lattice QCD
Existence of the critical point in finite density lattice QCD
Ejiri, S.
(C) 2008 American Physical Society
We propose a method to probe the nature of phase transitions in lattice QCD at finite temperature and density, which is based on the investigation of an effective potential as a function of the average plaquette. We analyze data obtained in a simulation of two-flavor QCD using p4-improved staggered quarks with bare quark mass m/T=0.4 and find that a first order phase transition line appears in the high density regime for μ q /T≳2.5 . We also discuss the difference between the phase structures of QCD with nonzero quark chemical potential and nonzero isospin chemical potential.
American Physical Society
2008-01
eng
journal article
http://hdl.handle.net/10191/27632
https://niigata-u.repo.nii.ac.jp/records/2278
info:doi/10.1103/PhysRevD.77.014508
AA00773624
15507998
Physical Review D
Physical Review D
77
1
014508
https://niigata-u.repo.nii.ac.jp/record/2278/files/77_1_014508.pdf
application/pdf
643.3 kB
2019-07-29