Abstract
We study the equilibrium statistical mechanics of classical two-dimensional Coulomb systems living on a pseudosphere (an infinite surface of constant negative curvature). The Coulomb potential created by one point charge exists and goes to zero at infinity. The pressure can be expanded as a series in integer powers of the density (the virial expansion). The correlation functions have a thermodynamic limit, and remarkably that limit is the same one for the Coulomb interaction and some other interaction law. However, special care is needed for defining a thermodynamic limit of the free energy density. There are sum rules expressing the property of perfect screening. These generic properties can be checked on the Debye–Hückel approximation, and on two exactly solvable models, the one-component plasma and the two-component plasma, at some special temperature.
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Jancovici, B., Téllez, G. Two-Dimensional Coulomb Systems on a Surface of Constant Negative Curvature. Journal of Statistical Physics 91, 953–977 (1998). https://doi.org/10.1023/A:1023079916489
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DOI: https://doi.org/10.1023/A:1023079916489