A Poissible Method to Determine the Order of QGP Phase Transitions

YAN WenBiao; YANG ChunBin; CAI Xu

Chinese Physics C> 2000, Vol. 24> Issue(9) : 852-857

A Poissible Method to Determine the Order of QGP Phase Transitions

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China

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Abstract：
In the framework of the extended Ginzburg-Landau model,the dependence of the multiplicity difference correlators F_q on phase space intervals δ is different in first-and second-order QGP phase transitions.Once ln F_q are expressed as functions of δ^1/3 and data-fitting by polynomials,one can determine the order of the phase transition by comparing the signs of the coefficients of the first power from fitting and from theoretical calculations. One virtue of this method is the independence of the unknown temperature parameter,and one can get the same information about the phase transition from one and higher dimensional analyses of the experimental data.

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[1]

Celik T,Engels J.Phys Lett.，1983.B133:4272 Matstu T. Satz. Z. Yhys. ,1988,037:6173 Gottlieb S.Kuti J,Toussaint D et al. Phys. Rev.Ixtt.，1985,55:19584 WU E Y. Rev. Mod. Phys.，1982,54:2355 HWA R C,Nazirov M T. Phys. Rev. Lett.，1992,69:7426 HWA R C. Phys. Rev.，1998,D57:18317 YANG ChunBin CAI XU. Phys. Rev，1998,057;20498 YANG ChunBin CAI XU. J. Phys. ,1998,624;1959 CAI Xu,YA.NG ChunBin,ZFinU ZhuoMei. Phys.Rev. ,1996,054:277510 CAI Xu, WANG XiaoRong, YANY ChunBin et al. Nucl Phys., B( Pro. Suppl) ,1999 , 71: 31911 YANG ChunBin, WANG XiaoRong, CAI Xu. Science in China,1997, A40:1065; YANG ChunBin, WANG XiaoRong,CAI Xu. Science in China(in China)，1997,A27:625(杨纯斌，王晓荣.蔡助.中国科学，1997,A27:625)12 YANG ChunBin, YAN WenBiao, CAI Xu. Science in China,1999, A42:646;YANG ChunBin,YAV WenBiao,CAI Xu. Science in China(in China),1999,A29:450(杨纯斌，哪文标，蔡助.中国科学，1999.A29:450)13 YANG ChunBin. CAI Xu. Phys. Rev. ,1998,058:118314 YAVG ChunBin,CAl Xu. J. Phys. ,1999,025:48515 YAN WenBiao, YANG ChunBin,CAl Xu. Chin Phys. Lett.，1999,16:25316 Mohanty A K.Kataria S K. Phys. Rev. Lett. ,1994,73:267217 Bialas A,Peschanski R. Nucl. Phys. 1986,B273:703;1988,B308:85718 Eggers H C,Elze H T. Sercevic L. Int. J. Mod. Phys. ,1994,A9:382119 Adamovich M I et al. ( EMU01 Collaboration) Phys. Lett. ,1991, 8262: 36920 YAN WenBiao YANG ChunBin CAI Xu. Int. J. Mod. Phys. A(Accepted)

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YAN WenBiao, YANG ChunBin and CAI Xu. A Poissible Method to Determine the Order of QGP Phase Transitions[J]. Chinese Physics C, 2000, 24(9): 852-857.

YAN WenBiao, YANG ChunBin and CAI Xu. A Poissible Method to Determine the Order of QGP Phase Transitions[J]. Chinese Physics C, 2000, 24(9): 852-857. shu

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Received: 1999-07-05
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A Poissible Method to Determine the Order of QGP Phase Transitions

Corresponding author: YAN WenBiao,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China

Received Date: 1999-07-05

Accepted Date: 1900-01-01

Available Online: 2000-09-05

Abstract: In the framework of the extended Ginzburg-Landau model,the dependence of the multiplicity difference correlators F_q on phase space intervals δ is different in first-and second-order QGP phase transitions.Once ln F_q are expressed as functions of δ^1/3 and data-fitting by polynomials,one can determine the order of the phase transition by comparing the signs of the coefficients of the first power from fitting and from theoretical calculations. One virtue of this method is the independence of the unknown temperature parameter,and one can get the same information about the phase transition from one and higher dimensional analyses of the experimental data.

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A Poissible Method to Determine the Order of QGP Phase Transitions

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