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arXiv · 1212.0890

Phase structure of finite density QCD with a histogram method

Yoshiyuki Nakagawa·Sinya Aoki·Shinji Ejiri·Tetsuo Hatsuda·Kazuyuki Kanaya·Hiroshi Ohno·Hana Saito·Takashi Umeda
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Abstract

We study the phase structure of QCD in the $T-\mu$ plane using a histogram method and the reweighting technique by performing phase quenched simulations of two-flavor QCD with RG-improved gauge action and O($a$) improved Wilson quark action. Taking the effects of the complex phase of the quark determinant using the cumulant expansion method, we calculate the probability distribution function of plaquette and phase-quenched determinant as a function of $T$ and $\mu$. We discuss the order of the QCD phase transition consulting the shape of the probability distribution function.

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Yoshiyuki Nakagawa, Sinya Aoki, Shinji Ejiri, Tetsuo Hatsuda, Kazuyuki Kanaya, Hiroshi Ohno, Hana Saito, Takashi Umeda. 2012-12-04. Phase structure of finite density QCD with a histogram method. https://arxiv.org/abs/1212.0890

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