1990•Annalen der PhysikRequires access

Derivation of Attractive Electron‐Electron Interactions for Superconductivity via Canonical Transformations

E. Kolley, Winfried Kolley

Abstract

Abstract Two canonical transformations, related to the theory of conventional and hightemperature superconductivity are performed in detail. The BCS Hamiltonian is deduced from the Fröhlich Hamiltonian, and the t ‐ J model with attraction from the Hubbard model in the limit of large on‐site Coulomb repulsion. The underlying approximations are pointed out.

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Available abstract

Key concepts: Superconductivity, Hamiltonian (control theory), Physics, Canonical transformation, Coulomb, Electron, Hubbard model, Quantum mechanics