Vector Meson Mass in Finite Density and Temperature Lattice QCD

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Communications in Theoretical Physics ›› 2015, Vol. 63 ›› Issue (05) : 559-564.

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Vector Meson Mass in Finite Density and Temperature Lattice QCD

WANG Rui¹, CHEN Ying^2,3, GONG Ming², LIU Chuan^4,8, LIU Yu-Bin¹, LIU Zhao-Feng², MA Jian-Ping⁵, MENG Xiang-Fei⁶, ZHANG Jian-Bo⁷

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Abstract

Vector meson mass values are studied at finite chemical potential and temperature in lattice QCD with lattice size of 24×12²×6 using two flavors of staggered quarks. The investigation focuses on the change of the vector meson mass in the critical region close to T_c with two different types of chemical potentials switched on: the isoscalar chemical potential μS and its isovector counterpart μV. It is found that the vector meson mass increases in the QGP phase with both chemical potentials and decreases with μS in the confinement phase.

Key words

lattice QCD / numerical simulation / vector meson

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WANG Rui, CHEN Ying, GONG Ming, LIU Chuan, LIU Yu-Bin, LIU Zhao-Feng, MA Jian-Ping, MENG Xiang-Fei, ZHANG Jian-Bo. Vector Meson Mass in Finite Density and Temperature Lattice QCD[J]. Communications in Theoretical Physics, 2015, 63(05): 559-564

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Funding

Supported by the National Science Foundation of China (NSFC) under Grant Nos. 11335001, 11105153, 11405178. It is also supported in part by the DFG and the NSFC (No. 11261130311) through funds provided to the Sino-Germen CRC 110 "Symmetries and the Emergence of Structure in QCD".