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Many-body Green functions of q-deformed oscillators

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
167
Issue
4
Identifiers
DOI: 10.1016/0375-9601(92)90272-n
Disciplines
  • Physics

Abstract

Abstract Certain thermal (Matsubara) Green functions are obtained for a “free” system of quantum-deformed harmonic oscillators. It is shown that the form of the single-particle Matsubara function is changed, with an explicit dependence on s = 1n q appearing in a simple form and suggesting that quantum-deformed commutation rules intrinsically incorporate interactions even in the “free case”. A two-particle Matsubara function gives no evidence of a bound state energy shift.

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