中国物理B ›› 2008, Vol. 17 ›› Issue (2): 585-591.doi: 10.1088/1674-1056/17/2/038

• NUCLEAR PHYSICS • 上一篇    下一篇

The mass effect of the quark phase transition in supernova core

赖祥军, 刘门全, 刘晶晶, 罗志全   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • 收稿日期:2007-05-03 修回日期:2007-09-07 出版日期:2008-02-20 发布日期:2008-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10347008), the Scientific Research and Fund of Sichuan Provincial Education Department (Grant No.2006A079) and the Science and Technological Foundation of China West Normal University.

The mass effect of the quark phase transition in supernova core

Lai Xiang-Jun(赖祥军), Liu Men-Quan(刘门全),Liu Jing-Jing(刘晶晶), and Luo Zhi-Quan(罗志全)†   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • Received:2007-05-03 Revised:2007-09-07 Online:2008-02-20 Published:2008-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10347008), the Scientific Research and Fund of Sichuan Provincial Education Department (Grant No.2006A079) and the Science and Technological Foundation of China West Normal University.

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摘要： Constituent quark mass model is adopted as a tentative one to study the phase transition between two-flavour quark matter and more stable three-flavour quark matter in the core of supernovae. The result shows that the transition has a significant influence on the increasing of the core temperature, the neutrino abundance and the neutrino energies, which contributes to the enhancement of the successful probability of supernova explosion. However, the equilibrium values of these parameters (except the temperature) from the constituent quark mass model in this work are slightly bigger than those obtained from the other model. And we find that the constituent quark mass model is also applicable to describing the transition in the supernova core.

Abstract: Constituent quark mass model is adopted as a tentative one to study the phase transition between two-flavour quark matter and more stable three-flavour quark matter in the core of supernovae. The result shows that the transition has a significant influence on the increasing of the core temperature, the neutrino abundance and the neutrino energies, which contributes to the enhancement of the successful probability of supernova explosion. However, the equilibrium values of these parameters (except the temperature) from the constituent quark mass model in this work are slightly bigger than those obtained from the other model. And we find that the constituent quark mass model is also applicable to describing the transition in the supernova core.

Key words: quark transitions, constituent quark mass, supernova, reaction rates

中图分类号:  (Supernovae)

  • 97.60.Bw
26.30.-k (Nucleosynthesis in novae, supernovae, and other explosive environments) 24.85.+p (Quarks, gluons, and QCD in nuclear reactions) 21.65.-f (Nuclear matter) 14.65.-q (Quarks) 97.10.Cv (Stellar structure, interiors, evolution, nucleosynthesis, ages)