Abstract
Low-temperature expansion for systems with many ground states is discussed. It is pointed out that, in general, different ground states may yield different formal perturbation expansions, and that the right expansion of the free energy is provided by ground states called here dominant.
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Supported in part by Grant AFOR-78-3522.
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Slawny, J. Low-temperature expansion for lattice systems with many ground states. J Stat Phys 20, 711–717 (1979). https://doi.org/10.1007/BF01009520
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DOI: https://doi.org/10.1007/BF01009520