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arXiv 0808.2879nucl-th
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反K介子在核物质中凝聚的临界温度

Critical temperature of antikaon condensation in nuclear matter

Sarmistha Banik, Walter Greiner, Debades Bandyopadhyay

摘要:

研究了中子星物质中$K^-$介子玻色-爱因斯坦凝聚的临界温度。这是在有限温度下的相对论场论模型的框架内研究的,其中核子-核子和(反)K介子-核子相互作用是由介子交换介导的。研究了不同反K介子光学势深度下反K介子凝聚体的熔化。我们发现反K介子凝聚的临界温度随重子数密度的增加而增加。进一步指出,反K介子光学势的吸引力降低,临界温度降低。我们还构造了中子星物质与$K^-$凝聚体的相图。

英文摘要:

We investigate the critical temperature of Bose-Einstein condensation of $K^-$ mesons in neutron star matter. This is studied within the framework of relativistic field theoretical models at finite temperature where nucleon-nucleon and (anti)kaon-nucleon interactions are mediated by the exchange of mesons. The melting of the antikaon condensate is studied for different values of antikaon optical potential depths. We find that the critical temperature of antikaon condensation increases with baryon number density. Further it is noted that the critical temperature is lowered as antikaon optical potential becomes less attractive. We also construct the phase diagram of neutron star matter with $K^-$ condensate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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