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Onsager's reaction field for the Potts model from the path integral (1990)

Kholodenko, A. L.

Springer

Journal of statistical physics 58 (1990), S. 355-370

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ISSN: 1572-9613

Keywords: Ising model ; Potts model ; functional integrals

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract A new path integral formulation for theq-state Potts model is proposed. This formulation reproduces known results for the Ising model (q=2) and naturally extends these results for arbitraryq. The mean field results for both the Ising and the Potts models are obtained as a leading saddle point contribution to the corresponding functional integrals, while the systematic computation of corrections to the saddle point contribution produces the Onsager reaction field terms, which forq=2 coincide with results already known for the Ising model.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01020297

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