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Title :Equation of state at finite density in two-flavor QCD with improved Wilson quarks
Authors :Aoki, S.
Ejiri, S.
Hatsuda, T.
Ishii, N.
Kanaya, K.
Maezawa, Y.
Ukita, N.
Umeda, T.
WHOT-QCD Collaboration
Publisher :SISSA
Issue Date :Jul-2008
Journal Title :PoS - Proceedings of Science
Volume :Lattice2008
Issue :189
Start Page :1
End Page :7
ISSN :1824-8039
Description :The XXVI Internaitonal Symposium on Lattice Field Theory July 14-19 2008 Williamsburg, Virginia, USA
Abstract :We study the equation of state in two-flavor QCD at finite temperature and density. Simulations are made with the RG-improved gluon action and the clover-improved Wilson quark action. Along the lines of constant physics for mPS/mV = 0.65 and 0.80, we compute the derivatives of the quark determinant with respect to the quark chemical potential μq up to the fourth order at μq = 0. We adopt several improvement techniques in the evaluation. We study thermodynamic quantities and quark number susceptibilities at finite μq using these derivatives. We find enhancement of the quark number susceptibility at finite μq, in accordance with previous observations using staggered-type quarks. This suggests the existence of a nearby critical point.
Type Local :会議発表論文
Language :eng
Format :application/pdf
URI :http://hdl.handle.net/10191/27687
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/27687/1/LATTICE 2008_189.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/10191/27687