3 years ago

Equation of state in (2+1)-flavor QCD at physical point with improved Wilson fermion action using gradient flow.

Masakiyo Kitazawa, Hiroshi Suzuki, Yusuke Taniguchi, Kazuyuki Kanaya, Takash Umeda, Ryo Iwami, Shinji Ejiri, WHOT-QCD Collaboration

We study the energy-momentum tensor and the equation of state as well as the chiral condensate in (2+1)-flavor QCD at the physical point applying the method of Makino and Suzuki based on the gradient flow. We adopt a nonperturbatively O(a)-improved Wilson quark action and the renormalization group-improved Iwasaki gauge action. At Lattice 2016, we have presented our preliminary results of our study in (2+1)-flavor QCD at a heavy u, d quark mass point. We now extend the study to the physical point and perform finite-temperature simulations in the range T \simeq 155--544 MeV (Nt = 4--14 including odd Nt's) at a \simeq 0.09 fm. We show our final results of the heavy QCD study and present some preliminary results obtained at the physical point so far.

Publisher URL: http://arxiv.org/abs/1710.10015

DOI: arXiv:1710.10015v1

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