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In the framework of Bogoliubov \(u-v\) transformation for fermions we solve the many-particle problemProblemmany-particle problem in the theory of superconductivityTheorytheory of superconductivity and derive the rigorous expression for the superconducting gapSuperconducting gap. We determine the spectrum of electronic excitationsExcitationelectronic excitation in superconductor and find the critical velocityCriticalcritical velocityVelocitycritical velocity applying Landau criterionCriterionLandau criterion for superfluidity.

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Lecture 24. Many-Particle Problem in the Theory of Superconductivity

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  • 发表日期：

    2026年

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  • Maxim Kagan

摘要

In the framework of Bogoliubov \(u-v\) transformation for fermions we solve the many-particle problemProblemmany-particle problem in the theory of superconductivityTheorytheory of superconductivity and derive the rigorous expression for the superconducting gapSuperconducting gap. We determine the spectrum of electronic excitationsExcitationelectronic excitation in superconductor and find the critical velocityCriticalcritical velocityVelocitycritical velocity applying Landau criterionCriterionLandau criterion for superfluidity.