Abstract
The random set of instants where the Brownian bridge vanishes is constructed in terms of a random branching process. The Hausdorff measure supported by this set is shown to be equivalent to the partition function of a special class of disordered systems. This similarity is used to show rigorously the existence of a phase transition for this particular class of disordered systems. Moreover, it is shown that at high temperature the specific free energy has the strong self-averaging property and that at low temperature it has no self-averaging property. The unicity at high-temperature and the existence of many limits at low temperature are established almost surely in the disorder.
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Communicated by J. Fröhlich
Work supported by the Swiss National Science Foundation
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Petritis, D. Thermodynamics for the zero-level set of the Brownian bridge. Commun.Math. Phys. 125, 579–595 (1989). https://doi.org/10.1007/BF01228342
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DOI: https://doi.org/10.1007/BF01228342