Accession Number:

AD0627067

Title:

CRITERIA FOR THE BEST BOGOLIUBOV QUASI PARTICLE.

Descriptive Note:

Scientific rept.,

Corporate Author:

UPPSALA UNIV (SWEDEN) QUANTUM CHEMISTRY GROUP

Personal Author(s):

Report Date:

1965-03-01

Pagination or Media Count:

8.0

Abstract:

The principle of compensation of dangerous diagrams has previously been the only general criterion for determining the coefficients in the Bogoliubov canonical transformation to quasiparticles. It is shown that the criterion of maximum overlap of the true ground state with the BCS ground state gives the same condition for determining the coefficients. The criterion of diagonalizing the quadratic part of the reaction operator, which is a generalization of the BrillouinBrueckner condition, is also equivalent to the above criteria. Finally these criteria are evaluated from the standpoint of least labor for the most accuracy. Author

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Quantum Theory and Relativity
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE