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Critical exponents at the Nishimori point

Gesualdo Delfino

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Abstract The Nishimori point of the random bond Ising model is a prototype of renormalization group fixed points with strong disorder. We show that the exact correlation length and crossover critical exponents at this point can be identified in two and three spatial dimensions starting from properties of the Nishimori line. These are the first exact exponents for frustrated random magnets, a circumstance to be also contrasted with the fact that the exact exponents of the Ising model without disorder are not known in three dimensions. Our considerations extend to higher dimensions and models other than Ising.

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Gesualdo Delfino

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Delfino, G. (2025). Critical exponents at the Nishimori point. https://doi.org/10.1088/1742-5468/adc4ce

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Lihat di Sumber doi.org/10.1088/1742-5468/adc4ce

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Tahun Terbit: 2025
Bahasa: en
Total Sitasi: 1×
Sumber Database: CrossRef
DOI: 10.1088/1742-5468/adc4ce
Akses: Open Access ✓