| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Curvature of Pseudocritical Transition Line for Two-Flavor QCD with Improved Kogut–Susskind Quarks |
| Liang-Kai Wu1**, Xiang-Fei Meng2, Fa-Ling Zhang1 |
1Faculty of Science, Jiangsu University, Zhenjiang 212013
2National Supercomputer Center, Tianjin 300457
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| Cite this article: |
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Liang-Kai Wu, Xiang-Fei Meng, Fa-Ling Zhang 2017 Chin. Phys. Lett. 34 041201 |
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Abstract The results on the curvature of a pseudocritical transition line for two-flavor QCD through lattice simulations are presented. The simulations are carried out with Symanzik-improved gauge action and Asqtad fermion action on a lattice $12^3\times4$ at quark mass $am=0.010$. At the imaginary chemical potentials $a\mu_{_{\rm I}}=0.050$, 0.150, 0.200, 0.225 and 0.250, we investigate the chiral condensate $\bar\psi\psi$, plaquette variable $P$ and imaginary part of Polyakov loop ${\rm Im}(L)$ and their susceptibilities. Analytic continuation from an imaginary chemical potential to a real one is used to obtain the expression for transition temperature as a function of the chemical potential. The curvature is 0.0326(46).
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Received: 02 November 2016
Published: 21 March 2017
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11347029 and 11105033. |
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