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Title :Study of the critical point in lattice QCD at high temperature and density
Authors :Ejiri, Shinji
Publisher :SISSA
Issue Date :Aug-2007
Journal Title :PoS - Proceedings of Science
Volume :Lattice2007
Issue :181
Start Page :1
End Page :7
ISSN :1824-8039
Description :The XXV Internaitonal Symposium on Lattice Field Theory July 30 - August 4 2007 Regensburug, Germany
Abstract :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 μq/T >_~2.5. The effective potential as a function of the quark number density is also studied. We calculate the chemical potential as a function of the density from the canonical partition function and discuss the existence of the first order phase transition line.
Type Local :会議発表論文
Language :eng
Format :application/pdf
URI :http://hdl.handle.net/10191/27699
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/27699/1/LATTICE 2007_181.pdf
Rights :© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Appears in Collections:99 その他学会発表資料

Please use this identifier to cite or link to this item: http://hdl.handle.net/10191/27699