NEW METHOD IN THE THEORY OF SUPERCONDUCTIVITY
The method of canonical transformations is generalized to Fermi systems and forms the basis of a method for investigating the problem of superconductivity. Starting from Frohlich's Hanmiltonian, the energy of the superconducting ground state and the one-Fermion and collective excitations corresponding to this state are obtained. It turns out that the final formulas for the ground state and one-Fermion excitations recently obtained by Bardeen, Cooper, and Schrieffer are correct in the first approximation. The physical picture appears to be closer to the one proposed by Schafroth, Butler, and Blatt. The effect on superconductivity of the Coulomb interaction between the electrons is analyzed in detail. A criterion for the superfiuidity of a Fermi system with a four-line vertex Hamiltonian is established. (auth)
- Research Organization:
- Joint Institute for Nuclear Research, Moscow; Akademiia Nauk S.S.S.R. Institut MAtematiki im V.A. Stelkov
- NSA Number:
- NSA-13-000390
- OSTI ID:
- 4304500
- Report Number(s):
- NP-6957
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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