On the perturbation-theoretic calculation of the one-particle excitation spectrum in a large Bose system View Full Text


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Article Info

DATE

1965-12

AUTHORS

P. Szépfalusy

ABSTRACT

Perturbation theoretic calculation of the one-particle Green’s functions is studied for a large system of bosons at zero temperature. We start from a splitting of the Hamiltonian in which the unperturbed part is chosen to be diagonal in theBogolyubov quasi particle operators. The self-consistent form of the perturbation expansion required by the appearance of inequivalent representations of canonical commutation relations is formulated and discussed. More... »

PAGES

109

References to SciGraph publications

  • 1965-12. On the renormalization of the energies of the one-particle excitations in a superfluid fermi system in ACTA PHYSICA ACADEMIAE SCIENTIARUM HUNGARICAE
  • 1958-10. On the collective properties of a boson system in IL NUOVO CIMENTO (1955-1965)
  • 1965-12. On the self-consistent method in ACTA PHYSICA ACADEMIAE SCIENTIARUM HUNGARICAE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf03156471

    DOI

    http://dx.doi.org/10.1007/bf03156471

    DIMENSIONS

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