Frustrated Potts model: Multiplicity eliminates chaos via reentrance.
basic_science · Level V
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- Record sourced from PubMed, PMID 32942478.
- Also identified by DOI 10.1103/PhysRevE.102.022122.
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Abstract
The frustrated q-state Potts model is solved exactly on a hierarchical lattice, yielding chaos under rescaling, namely, the signature of a spin-glass phase, as previously seen for the Ising (q=2) model. However, the ground-state entropy introduced by the (q>2)-state antiferromagnetic Potts bond induces an escape from chaos as multiplicity q increases. The frustration versus multiplicity phase diagram has a reentrant (as a function of frustration) chaotic phase.