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Ab initio study of the thermodynamics of quantum chromodynamics on the lattice at zero and finite densities
Ab initio study of the thermodynamics of quantum chromodynamics on the lattice at zero and finite densities
Ejiri, Shinji
Kanaya, Kazuyuki
Umeda, Takashi
WHOT-QCD, Collaboration
© The Author(s) 2012. Published by Oxford University Press on behalf of the Physical Society of Japan. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
The WHOT-QCD Collaboration is pushing forward a series of lattice studies of quantum chromodynamics (QCD) at finite temperatures and densities using improved Wilson quarks. Because Wilson-type quarks require more computational resources than the more widely used staggered-type quarks, various theoretical and computational techniques have to be developed and applied. In this paper, we introduce a fixed-scale approach armed with a T-integration method, a Gaussian method based on cumulant expansion, and a histogram method combined with the reweighting technique. Using these methods, we have carried out the first study of finite-density QCD with Wilson-type quarks and the first calculation of the equation of state with 2+1 flavors of Wilson-type quarks. We present the results of these studies and discuss perspectives towards clarification of the properties of 2+1 flavor QCD at the physical point at finite temperatures and densities.
Oxford University Press
2012-09
eng
journal article
http://hdl.handle.net/10191/27653
https://niigata-u.repo.nii.ac.jp/records/2548
info:doi/10.1093/ptep/pts005
20503911
Progress of Theoretical and Experimental Physics
Progress of Theoretical and Experimental Physics
2012
01A104
1
35
https://niigata-u.repo.nii.ac.jp/record/2548/files/PTEP_2012_01A104_1-35.pdf
application/pdf
1.9 MB
2019-07-29