A quantum field theory of crystals. IV

Toyoyuki Kitamura

Physica A: Statistical Mechanics and its Applications, 1983, vol. 119, issue 1, 67-77

Abstract: One-dimensional boson and fermion systems are investigated for which the ground state expectation value of a molecule field does not exist; the assumptions on the energy bands and the two-body potential are the same for both systems. The systems behave essentially in the same fashion; they have particle-hole pairs, gapless phonons, energy dispersions with a linear momentum etc. It is shown that the coefficient of the momentum in the boson energy spectrum is larger than that in the fermion one.

Date: 1983
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:119:y:1983:i:1:p:67-77

DOI: 10.1016/0378-4371(83)90146-2

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