Temperature Chaos does exists in non-equilibrium spin-glass dynamics.
ORAL
Abstract
Spin glasses exhibit a fragile behavior in response to perturbations such as temperature changes. Specifically, arbitrary small changes in the temperature would lead to a complete reorganization of the equilibrium configuration of the spin glass. This equilibrium phenomenon is named Temperature Chaos [1,2].
I shall argue that an effect that closely mimics Temperature Chaos is, indeed, present in the non-equilibrium dynamics of a spin glass. This new phenomenon has been observed in a large-scale simulation in the dedicated computer Janus II [3]. Therefore, we believe that this work lays the ground for the theoretical analysis of temperature-cycling experiments in glassy systems.
We find that, the key quantity which is ruling the non-equilibrium Temperature Chaos phenomenon is the correlation length ξ. Also, we find a crossover between weak and strong chaos regime controlled by a crossover length ξ*.
[1] A. J. Bray and M. A. Moore, Phys. Rev. Lett. 58, 57 (1987)
[2] J. R. Banavar and A. J. Bray, Phys. Rev. B 35, 8888 (1987)
[3] J. Moreno-Gordo et al Work in preparation
I shall argue that an effect that closely mimics Temperature Chaos is, indeed, present in the non-equilibrium dynamics of a spin glass. This new phenomenon has been observed in a large-scale simulation in the dedicated computer Janus II [3]. Therefore, we believe that this work lays the ground for the theoretical analysis of temperature-cycling experiments in glassy systems.
We find that, the key quantity which is ruling the non-equilibrium Temperature Chaos phenomenon is the correlation length ξ. Also, we find a crossover between weak and strong chaos regime controlled by a crossover length ξ*.
[1] A. J. Bray and M. A. Moore, Phys. Rev. Lett. 58, 57 (1987)
[2] J. R. Banavar and A. J. Bray, Phys. Rev. B 35, 8888 (1987)
[3] J. Moreno-Gordo et al Work in preparation
*We acknowledge support from the European Research Council (ERC), through contracts 694925 and from MINECO (Spain), through Grants No. FIS2016-76359-P, No.PID2019-103939RB-I00, No. PGC2018-094684-B-C21
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Presenters
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Javier Moreno-Gordo
- University of Zaragoza
- Universidad de Saragoza, Instituto de Biocomputacion y fisica de sistemas complejos