Abstract
For a class of unstable pair interactions in classical continuous systems of identical particles the high-temperature thermodynamic behavior is shown to be normal by extending low-density theorems for the correlation functions. In an example we prove a transition between a translation-invariant phase at high temperatures and low densities and solid with long-range oder at low temperatures. The transition is “catastropic” in the sense that it is accompanied by the divergence of thermodynamic quantities. We also exhibit counterexamples of unstable interactions in any dimension which do not give rise to a low-temperature catastrophe.
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Sütő, A. Low-density expanison for unstable interactions and a model of crystallization. J Stat Phys 82, 1541–1573 (1996). https://doi.org/10.1007/BF02183395
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DOI: https://doi.org/10.1007/BF02183395