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arXiv 1012.5559hep-th
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P波超导体在Gauss-Bonnet引力中的全息相变

Holographic Phase Transitions of P-wave Superconductors in Gauss-Bonnet Gravity with Back-reaction

Rong-Gen Cai, Zhang-Yu Nie, Hai-Qing Zhang

摘要:

在巨正则系综下,研究了(4+1)维Einstein-Yang-Mills-Gauss-Bonnet理论中全息p波超导体的相变.研究发现,当Gauss-Bonnet系数增大或反作用增强时,矢量序参量的凝聚变得更加困难。特别地,矢量序参量表现出一级和二级相变的特征,而在探针极限中仅观察到二级相变。讨论了Gauss-Bonnet项和反反应在改变相变顺序中所起的作用。

英文摘要:

We investigate the phase transitions of holographic p-wave superconductors in (4+1)-dimensional Einstein-Yang-Mills-Gauss-Bonnet theories, in a grand canonical ensemble. Turning on the back-reaction of the Yang-Mills field, it is found that the condensations of vector order parameter become harder if the Gauss-Bonnet coefficient grows up or the back-reaction becomes stronger. In particular, the vector order parameter exhibits the features of first order and second order phase transitions, while only the second order phase transition is observed in the probe limit. We discuss the roles that the Gauss-Bonnet term and the back-reaction play in changing the order of phase transition.

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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