Numerical study of QCD phase diagram at high temperature and density by a histogram method

• Authors: Shinji Ejiri , Sinya Aoki , Tetsuo Hatsuda , Kazuyuki Kanaya , Yoshiyuki Nakagawa , Hiroshi Ohno , Hana Saito , Takashi Umeda
• Languages of publication: EN

Abstracts

EN

We study the QCD phase structure at high temperature and density adopting a histogram method. Because the quark determinant is complex at finite density, the Monte-Carlo method cannot be applied directly. We use a reweighting method and try to solve the problems which arise in the reweighting method, i.e. the sign problem and the overlap problem. We discuss the chemical potential dependence of the probability distribution function in the heavy quark mass region and examine the applicability of the approach in the light quark region.

Keywords

EN

CPOD 2011

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 6
• Pages: 1322-1325

Dates

published

1 - 12 - 2012

online

4 - 12 - 2012

Contributors

author

Shinji Ejiri

• Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan

author

Sinya Aoki

author

Tetsuo Hatsuda

author

Kazuyuki Kanaya

• Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan

author

Yoshiyuki Nakagawa

• Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan

author

Hiroshi Ohno

• Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan

author

Hana Saito

• Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan

author

Takashi Umeda

• Graduate School of Education, Hiroshima University, Hiroshima, 739-8524, Japan

References

• [1] H. Saito, et al., Phys. Rev. D 84, 054502 (2011) http://dx.doi.org/10.1103/PhysRevD.84.054502
• [2] Y. Nakagawa et al., PoS (LATTICE 2011) 208 (2011)
• [3] H. Saito et al., PoS (LATTICE 2011) 214 (2011)

Identifiers

DOI

10.2478/s11534-012-0054-7