Aug 1 – 3, 2016
Plymouth University
Europe/London timezone
The 14th International workshop on QCD in extreme conditions, Aug. 1-3 2016

Critical endline of the finite temperature phase transition for 2+1 flavor QCD around the SU(3)-flavor symmetric point

Aug 3, 2016, 4:25 PM
Portland Square (Plymouth University)

Portland Square

Plymouth University

Drake Circus Plymouth, Devon PL4 8AA, UK
Talk QCD phase diagram Wednesday PM


Dr Yoshifumi Nakamura (RIKEN)


We investigate the critical endline of the finite temperature phase transition of QCD around the SU(3)-flavor symmetric point at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and non-perturbatively $O(a)$-improved Wilson-clover fermion action. The critical endline is determined by using the intersection point of kurtosis, employing the multi-parameter, multi-ensemble reweighting method to calculate observables off the SU(3)-symmetric point, at the temporal size $N_{\rm T}$=6 and lattice spacing as low as $a \approx 0.19$ fm. We confirm that the slope of the critical endline takes the value of $-2$, and find that the second derivative is positive, at the SU(3)-flavor symmetric point on the Columbia plot parametrized with the strange quark mass $m_s$ and degenerated up-down quark mass $m_{\rm l}$.

Primary author

Dr Yoshifumi Nakamura (RIKEN)


Dr Akira Ukawa (RIKEN) Dr Shinji Takeda (Kanazawa University) Prof. Yoshinobu Kuramashi (University of Tsukuba)

Presentation materials