Phase Diagram of a Two-Dimensional Neutral Classical Coulomb Gas from a Non-perturbative sine-Gordon Expansion

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dc.creatorLu, Wen-Fa
dc.creatorKim, Chul Koo
dc.date2001-02-13
dc.date.accessioned2026-07-07T02:40:22Z
dc.date.available2026-07-07T02:40:22Z
dc.descriptionWithin the sine-Gordon formalism of a two-dimensional neutral classical Coulomb gas, a convergent expansion with non-perturbative nature is performed to calculate the thermodynamic potential and construct the phase diagram. It is shown that truncation at the first order yields the Gaussian approximation. The second- and third-order corrections are analyzed for the case of small fugacity and are shown that they substantially improve the Gaussian-approximation phase diagram. In particular, these corrections introduce a new conducting phase and make the insulator-conductor coexistence phase end at the conducting phase. The latter result is in agreement with the prediction made by generalized renormalization-group calculations.
dc.description7 pages, 1 figure (EPS), Revtex
dc.identifierhttps://arxiv.org/abs/cond-mat/0102224
dc.identifierhttp://arxiv.org/abs/cond-mat/0102224
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/17354
dc.subjectCondensed Matter
dc.titlePhase Diagram of a Two-Dimensional Neutral Classical Coulomb Gas from a Non-perturbative sine-Gordon Expansion
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