Show simple item record Li, Anyi en_US 2011-06-21T17:27:48Z 2011-06-21T17:27:48Z 2010 en_US
dc.identifier.citation Li,Anyi;Alexandru,Andrei;Liu,Keh-Fei;Meng,Xiangfei;XQCD Collaboration. 2010. Finite density phase transition of QCD with N-f=4 and N-f=2 using canonical ensemble method. Physical Review D 82(5): 54502-54502. en_US
dc.identifier.issn 1550-7998 en_US
dc.description.abstract In a progress toward searching for the QCD critical point, we study the finite density phase transition of N-f = 4 and 2 lattice QCD at finite temperature with the canonical ensemble approach. We develop a winding number expansion method to accurately project out the particle number from the fermion determinant which greatly extends the applicable range of baryon number sectors to make the study feasible. Our lattice simulation was carried out with the clover fermions and improved gauge action. For a given temperature, we calculate the baryon-chemical potential from the canonical approach to look for the mixed phase as a signal for the first-order phase transition. In the case of N-f = 4, we observe an "S-shape'' structure in the chemical potential-density plane due to the surface tension of the mixed phase in a finite volume which is a signal for the first-order phase transition. We use the Maxwell construction to determine the phase boundaries for three temperatures below T-c. The intersecting point of the two extrapolated boundaries turns out to be at the expected first-order transition point at T-c with mu = 0. This serves as a check for our method of identifying the critical point. We also studied the N-f = 2 case, but do not see a signal of the mixed phase for temperature as low as 0.83T(c). en_US
dc.language.iso en_US en_US
dc.publisher AMER PHYSICAL SOC en_US
dc.relation.isversionof doi:10.1103/PhysRevD.82.054502 en_US
dc.subject chiral-symmetry breaking en_US
dc.subject quenched lattice qcd en_US
dc.subject wilson fermions en_US
dc.subject quantum chromodynamics en_US
dc.subject baryon density en_US
dc.subject monte-carlo en_US
dc.subject temperature en_US
dc.subject parity en_US
dc.subject restoration en_US
dc.subject algorithm en_US
dc.subject astronomy & astrophysics en_US
dc.subject physics, particles & fields en_US
dc.title Finite density phase transition of QCD with N-f=4 and N-f=2 using canonical ensemble method en_US
dc.title.alternative en_US
dc.description.version Version of Record en_US 2010-9-20 en_US
duke.description.endpage 54502 en_US
duke.description.issue 5 en_US
duke.description.startpage 54502 en_US
duke.description.volume 82 en_US
dc.relation.journal Physical Review D en_US

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