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2003

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10920

Order-parameter fluctuations in Ising spin glasses at low temperatures

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Abstract

We present a numerical study of the order-parameter fluctuations for Ising spin glasses in three and four dimensions at very low temperatures and without an external field. Accurate measurements of two previously introduced parameters, A and G, show that the order parameter is not self-averaging, consistent with a zero-temperature thermal exponent value \theta' \simeq 0, and confirm the validity of the relation G=1/3 in the thermodynamic limit in the whole low-temperature phase, as predicted by stochastic stability arguments.

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http://doi.org/10.1103/PhysRevB.68.224430

Subject

Vidres de spin, Temperatures baixes, Propietats magnètiques

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Spin glasses, Low temperatures, Magnetic properties

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Articles publicats en revistes (Física de la Matèria Condensada)

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PALASSINI, Matteo, SALES I PARDO, Marta and RITORT FARRAN, Fèlix. Order-parameter fluctuations in Ising spin glasses at low temperatures. Physical Review B. 2003. Vol. 68, num. 22, pags. 224430-1-224430-6. ISSN 0163-1829. [consulted: 7 of October of 2026]. Available at: https://hdl.handle.net/2445/10920

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