Abstract
Using low-fugacity expansions, we study the exact behavior of the Kosterlitz-Thouless critical line near the zero-density critical point. We show that the critical temperature deviates from its zero-density value by a term proportional to the square root of the density.
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Communicated by J. L. Lebowitz
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Alastuey, A., Cornu, F. Critical line near the zero-density critical point of the Kosterlitz-Thouless transition. J Stat Phys 87, 891–895 (1997). https://doi.org/10.1007/BF02181249
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DOI: https://doi.org/10.1007/BF02181249