Specific heat difference functional derivative within strong coupling theory

作者: F Marsiglio , JP Carbotte , E Schachinger , None

DOI: 10.1007/BF00684004

关键词: RenormalizationSpectral densitySuperconductivityTransition temperatureWork (thermodynamics)CouplingQuantum mechanicsFunctional derivativeMathematical modelPhysics

摘要: A formal expression is derived for the functional derivative of specific heat difference with respect to electron-phonon spectral density valid strong coupling superconductors and all temperatures. numerical solution Eliashberg equations required obtain results derivative. Moreover, a previous weak approximation has been extended into regime analytic expressions atT c have derived. Finally, way in which this work encompasses discussed.

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