The Equation of State and Phase Structure in A Model with Dynamical Spontaneous Symmetry Breaking at Finite Temperature and Density

  • Based on the Lurie model,a convenient scheme is constructed for calculating the equation of state approximately.The parametric equaion of state is given in the Lurie model.The phase diagram of the model shows the existence of critical point separating first order from second order chiral phase transition.The careful analysis of isotherms of pressure versus net baryon number density suggests the existence of overheat and overcool metastable state and the coexistence of broken phase and normal phase.
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  • [1] For a review, see, J. Cleymans, R. V. Gavai and E. Suhonen, Phys. Rep., 130 (1986),217,[2] E. V. E. Kovacs, D. K. Sinclair and J. B. Kogut, Phys. Rev. Lett., 58(1987), 751; J. B. Kog-ut, E. V. E. Kovacs and D. K. Sinclair, Nucl. Phys., B290(1987), 431,[3] Wang Enke, Li Jiarong and Liu Lianshou, Phys. Rev, D41 (1990), 2288;王恩科,李家荣,刘连寿,高能物理与核物理,14(1990), 407,[4] 王恩科,李家荣,高能物理与核物理,14(1990), 980,[5] A. Barducci, R. Casalbuoni, S. De Curtis, R. Gatto and G. Pettini, Phys. Lett.,B231 (1989)463; Phys. Rev., D41 (1990), 1610; U. Wolff, Phys. Lett., B157 (1985), 303,[6] Y. Nambu and G. Jona-Lasinio, Phys. Rev., 122 (1961),345; 124(1961), 246,[7] Zhuang Pengfei, Wang Zhengqing and Liu Lianshou, Z.Phys., C32 (1986), 93;沈国金,王恩科,李家荣,高能物理与核物理,13(1989), 205,[8] D. Lurie, Particle and Field (Interscience, New York) (1968) p453; D. Lurie and A. J. Macfa-rlane, Phys. Rev., 136B (1964), 816,[9] See, for example, Tao Huang and Zheng Huang, Phys. Rev., D39 (1989), 1213,[10] J. D. Walecka, Ann. Phys., (N. Y.) 83(1974), 491; Phys. Lett., B59(1975), 109,[11] Liu Baohua and Li Jiarong, Phys. Rev., D37(1988), 190,[12] For a review, see, A. D. Linde, Rep. Prog. Phys., 42(1979), 389,[13] 王恩科,华中师范大学拉子物理研究所博士论文,(1990),
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WANG En-Ke and LI Jia-Rong. The Equation of State and Phase Structure in A Model with Dynamical Spontaneous Symmetry Breaking at Finite Temperature and Density[J]. Chinese Physics C, 1992, 16(4): 344-351.
WANG En-Ke and LI Jia-Rong. The Equation of State and Phase Structure in A Model with Dynamical Spontaneous Symmetry Breaking at Finite Temperature and Density[J]. Chinese Physics C, 1992, 16(4): 344-351. shu
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Received: 1900-01-01
Revised: 1900-01-01
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The Equation of State and Phase Structure in A Model with Dynamical Spontaneous Symmetry Breaking at Finite Temperature and Density

    Corresponding author: WANG En-Ke,
  • Jingzhou Teacher's College,Hubei 434100Institute of Particle Physics,Huazhong Normal University,Wuhan 430070

Abstract: Based on the Lurie model,a convenient scheme is constructed for calculating the equation of state approximately.The parametric equaion of state is given in the Lurie model.The phase diagram of the model shows the existence of critical point separating first order from second order chiral phase transition.The careful analysis of isotherms of pressure versus net baryon number density suggests the existence of overheat and overcool metastable state and the coexistence of broken phase and normal phase.

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