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arXiv 1301.0691hep-thcond-mat.supr-conhep-ph
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超对称BCS:外部磁场和间隙空间涨落的影响

Supersymmetric BCS: Effects of an external magnetic field and spatial fluctuations of the gap

Alejandro Barranco

摘要:

最近提出了BCS超导的N=1超对称模型,实现了U(1)R对称性的自发对称性破缺。由于标量贡献的超导相变原来是一阶,而不是在标准BCS理论的二阶。在这里,我们考虑的影响,外部磁场和空间波动的差距在该模型中。这使我们能够计算磁穿透长度和相干长度,并区分I型和II型超导体。我们比较了超对称和标准相对论BCS的结果,其中主要的差异来自于不同的相变的顺序。

英文摘要:

Recently an N=1 supersymmetric model of BCS superconductivity was proposed realizing spontaneous symmetry breaking of a U(1)_R symmetry. Due to scalar contributions the superconducting phase transition turned out to be first order rather than second order as in standard BCS theory. Here we consider the effects of an external magnetic field and spatial fluctuations of the gap in that model. This allows us to compute the magnetic penetration length and the coherence length, and also to distinguish between type I and type II superconductors. We compare the supersymmetric and standard relativistic BCS results, where the main differences come from the different orders of the 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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