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Title :Finite density QCD phase transition in the heavy quark region
Authors :Saito, H.
Aoki, S.
Kanaya, K.
Ohno, H.
Ejiri, S.
Nakagawa, Y.
Hatsuda, T.
Umeda, T.
WHOT-QCD Collaboration
Publisher :SISSA
Issue Date :Jul-2011
Journal Title :PoS - Proceedings of Science
Volume :Lattice2011
Issue :214
Start Page :1
End Page :7
ISSN :1824-8039
Description :The XXIX Internaitonal Symposium on Lattice Field Theory, Lattice2011 July 11-16, 2011 The Village at Squaw Valley, US
Abstract :We extend our previous study of the QCD phase structure in the heavy quark region to non-zero chemical potentials. To identify the critical point where the first order deconfining transition terminates, we study an effective potential defined by the probability distribution function of the plaquette and the Polyakov loop. The reweighting technique is shown to be powerful in evaluating the effective potential in a wide range of the plaquette and Polyakov loop expectation values. We adopt the cumulant expansion to overcome the sign problem in the calculation of complex phase of the quark determinant. We find that the method provides us with an intuitive and powerful way to study the phase structure. We estimate the location of the critical point at finite chemical potential in the heavy quark region.
Type Local :会議発表論文
Language :eng
Format :application/pdf
URI :http://hdl.handle.net/10191/27686
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/27686/1/Lattice 2011_214.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/10191/27686