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arXiv 1009.0752hep-thhep-ph
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有限温度和化学势下带电标量的相变

Phase Transitions of Charged Scalars at Finite Temperature and Chemical Potential

Rachel A. Rosen

摘要:

在单圈水平上计算了有限温度和化学势下标量量子电动力学的巨正则配分函数。一个经典的背景电荷密度与电荷相反的标量确保系统的中性。对于低密度系统,我们发现一阶相变的证据。我们发现的上限和下限的转变温度低于带电标量形成的冷凝物。一级相变可能会对氦核白矮星产生影响,在这种恒星中,有人认为可能存在这样一种带电氦-4核的凝聚体。

英文摘要:

We calculate the grand canonical partition function at the one-loop level for scalar quantum electrodynamics at finite temperature and chemical potential. A classical background charge density with a charge opposite that of the scalars ensures the neutrality of the system. For low density systems we find evidence of a first order phase transition. We find upper and lower bounds on the transition temperature below which the charged scalars form a condensate. A first order phase transition may have consequences for helium-core white dwarf stars in which it has been argued that such a condensate of charged helium-4 nuclei could exist.

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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