Abstract
We illustrate the mechanism producing the dipole phase in a two dimensional Coulomb system by a detailed analysis of a hierarchical model. We prove the analyticity of the pressure and of the correlations for α2≡βe 2>8π (i.e. right above the usually conjectured value for the Kosterlitz-Thouless phase transition). We find also a power law decay for the correlations with exponent α2/2π as the hierarchical distance goes to infinity.
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Communicated by J. Fröhlich
Partially supported by “Ministero della Pubblica Istruzione”, Gruppo Nazionale per la Fisica Matematica del CNR” and Grant A.F.O.S.R.-82-0016C
Partially supported by “Ministero della Pubblica Istruzione” and Grant N.S.F. DMS 85-03333
Partially supported by “Ministera della Pubblica Istruzione”
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Benfatto, G., Gallavotti, G. & Nicolò, F. The dipole phase in the two-dimensional hierarchical Coulomb gas: Analyticity and correlations decay. Commun.Math. Phys. 106, 277–288 (1986). https://doi.org/10.1007/BF01454976
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DOI: https://doi.org/10.1007/BF01454976