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Condensed Matter > Statistical Mechanics
Title: The enigmatic exponent koppa and the story of finite-size scaling above the upper critical dimension
(Submitted on 14 Apr 2024)
Abstract: Scaling, hyperscaling and finite-size scaling were long considered problematic in theories of critical phenomena in high dimensions. The scaling relations themselves form a model-independent structure that any model-specific theory must adhere to, and they are accounted for by the simple principle of homogeneity. Finite-size scaling is similarly founded on the fundamental idea that only two length scales enter the game -- namely system length and correlation length. While all scaling relations are quite satisfactory for multitudes of physical systems in low dimensions, one fails in high dimensions...
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