均匀弱磁场中的BCS临界温度
The BCS critical temperature in a weak homogeneous magnetic field
摘要：
我们表明，在BCS理论的线性近似，弱均匀磁场降低了临界温度的明确常数倍的磁场强度，到高阶项。这提供了一个严格的推导和推广的结果在物理文献中获得的WHH理论的上临界磁场。在我们的证明中，一个新的成分是严格的相位近似来控制磁场的影响。
英文摘要：
We show that, within a linear approximation of BCS theory, a weak homogeneous magnetic field lowers the critical temperature by an explicit constant times the field strength, up to higher order terms. This provides a rigorous derivation and generalization of results obtained in the physics literature from WHH theory of the upper critical magnetic field. A new ingredient in our proof is a rigorous phase approximation to control the effects of the magnetic field.
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