Overlap Structure and Free Energy Fluctuations in Short-Range Spin Glasses
arXiv:2306.07132 · doi:10.1088/1751-8121/ad2b87
Abstract
We investigate scenarios in which the low-temperature phase of short-range spin glasses comprises thermodynamic states which are nontrivial mixtures of multiple incongruent pure state pairs. We construct a new kind of metastate supported on Gibbs states whose edge overlap values with a reference state fall within a specified range. Using this metastate we show that, in any dimension, the variance of free energy difference fluctuations between pure states within a single mixed Gibbs state with multiple edge overlap values diverges linearly with the volume. We discuss some implications of these results.
arXiv comment10 pages, no figures
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