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A statics-dynamics equivalence through the fluctuation-dissipation ratio provides a window into the spin-glass phase from nonequilibrium measurements

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2017-02-21
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National Academy of Sciences
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We have performed a very accurate computation of the non-equilibrium fluctuation- dissipation ratio for the 3D Edwards-Anderson Ising spin glass, by means of large-scale simulations on the special-purpose computers Janus and Janus II. This ratio (computed for finite times on very large, effectively infinite, systems) is compared with the equilibrium probability distribution of the spin overlap for finite sizes. Our main result is a quantitative statics-dynamics dictionary, which could allow the experimental exploration of important features of the spin-glass phase without requiring uncontrollable extrapolations to infinite times or system sizes.
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©National Academy of Sciences. European Union; government of Spain; government of Aragon; Ministerio de Economia, Industria y Competitividad (Spain) [FIS2012-35719-C02, FIS2013-42840-P, FIS2015-65078-C2]; Junta de Extremadura (Spain) throuFEDERgh [GRU10158]; European Union [654971]; European Research Council (ERC) under the European Union [694925]; National Science Foundation Division of Materials Research Grant [305184]; Soft Matter Program at Syracuse University; ERC Grant Non Perturbative Renormalization Group Theory of Glassy Systems
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