Ornstein-Zernike Asymptotics for a General “Two-Particle” Lattice Operator

We study the asymptotic behavior of correlations for a general “two-particle” operator acting on the Hilbert space , for all dimension d  = 1, 2, . . .. is written as the sum of a “main” term, and a small “interacting” term, a form which appears in many problems. If the interacting term is small, we...

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Bibliographic Details
Published inCommunications in mathematical physics Vol. 305; no. 3; pp. 605 - 631
Main Authors Boldrighini, C., Minlos, R. A., Pellegrinotti, A.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.08.2011
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Summary:We study the asymptotic behavior of correlations for a general “two-particle” operator acting on the Hilbert space , for all dimension d  = 1, 2, . . .. is written as the sum of a “main” term, and a small “interacting” term, a form which appears in many problems. If the interacting term is small, we give a complete description of the asymptotics for large t of the correlations , for f (1) , f (2) in some suitable class. The asymptotics is of the Ornstein-Zernike type, i.e., exponential with a power-law factor, which is t − d for d  ≥ 3, but for d  = 1, 2 it can be “anomalous” and is determined by the interacting term.
ISSN:0010-3616
1432-0916
DOI:10.1007/s00220-011-1270-5