Self-consistent T-matrix theory of superconductivity

Article

关键词: ATTRACTIVE HUBBARD-MODEL;    NUCLEAR-MATTER;    BINARY ALLOYS;    TRANSPORT;    TEMPERATURE;    SCATTERING;    APPROXIMATION;    SUPERFLUIDITY;    SINGULARITIES;    LIQUID-HE-3;   

DOI  :  10.1103/PhysRevB.84.094529

来源: SCIE

【 摘 要 】

Using principles of the Fadeev-Lovelace-Watson multiple scattering expansion, a T-matrix approximation is derived which coincides with the Galitskii-Feynman T matrix in the normal state and yields the gap in the superconducting state. Unlike other T-matrix approaches, the theory satisfies not only the self-consistent Thouless criterion but also the Baym-Kadanoff conditions for a conserving theory in equilibrium. In single-mode approximation it simplifies to the Eliashberg theory.

【 授权许可】

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