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Название: Large-Distance Behavior of Particle Correlations in the Two-Dimensional Two-Component Plasma
Авторы: Samaj L., Jancovici B.
Journal of Statistical Physics, Vol. 106, Nos. 1/2, January 2002. p. 301-321.
The model under consideration is a two-dimensional two-component plasma, i.e., a continuous system of two species of pointlike particles of opposite charges + 1, interacting through the logarithmic Coulomb interaction. Using the exact results for the form-factors of an equivalent Euclidean sine-Gordon theory, we derive the large-distance behavior of the pair correlation functions between charged particles. This asymptotic behavior is checked on a few lower orders of its beta-expansion (beta is the inverse temperature) around the Debye-Huckel limit beta->0, and at the free-fermion point ft = 2 at which the collapse of positive-negative pairs of charges occurs.