双味夸克-介子模型中的气泡成核* * 国家自然科学基金委员会(NSFC)(11675048)部分资助

IF 3.6 2区 物理与天体物理 Q1 PHYSICS, NUCLEAR
Junrong Wang, Ziwan Yu, Hong Mao
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引用次数: 0

摘要

我们研究了在双味夸克-介子模型中通过同质热成核实现的一阶夸克-哈得孙转变的动力学。我们在温度和化学势平面上得到了费米真空环在有效热力学势和相图中的贡献,以及临界终点(CEP)的位置。对于弱一阶相变和强一阶相变,以温度为变量,详细地数值计算了临界气泡轮廓、表面张力的演变以及存在成核气泡时的鞍点作用。我们的结果表明,只要温度介于以向上和向下自旋线为特征的逸散区域之间,系统就能长期处于逸散状态。此外,当化学势非常高时,临界时的表面张力将上升到近似值。如此小的表面张力值将有利于紧凑恒星内核中的混合相,并可能对天体物理学产生重要影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bubble nucleation in the two-flavor quark-meson model* * Supported in part by the National Natural Science Foundation of China (NSFC) (11675048)
We investigate the dynamics of a first-order quark-hadron transition via homogeneous thermal nucleation in the two-flavor quark-meson model. The contribution of the fermionic vacuum loop in the effective thermodynamics potential and phase diagram, together with the location of the critical endpoint (CEP), is obtained in the temperature and chemical potential plane. For weak and strong first-order phase transitions, by taking the temperature as a variable, the critical bubble profiles, evolutions of the surface tension, and saddle-point action in the presence of a nucleation bubble are numerically calculated in detail when fixing the chemical potentials at and . Our results show that the system could be trapped in the metastable state for a long time as long as the temperature is between the metastable region characterized by the up and low spinodal lines. Moreover, the surface tension at criticality will rise to approximately when the chemical potential is very high. Such a small surface tension value would favor a mixed phase in the cores of compact stars and may have an important implication in astrophysics.
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来源期刊
中国物理C
中国物理C 物理-物理:核物理
CiteScore
6.50
自引率
8.30%
发文量
8976
审稿时长
1.3 months
期刊介绍: Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.
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