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Dynamical transition in the D=3 Edwards-Anderson spin glass in an external magnetic field

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Baity Jesi, Marco and Fernández Pérez, Luis Antonio and Martín Mayor, Víctor and Muñoz Sudupe, Antonio and Otros, ... (2014) Dynamical transition in the D=3 Edwards-Anderson spin glass in an external magnetic field. Physical review E, 89 (3). ISSN 1539-3755

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Official URL: http://doi.org/10.1103/PhysRevE.89.032140


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http://journals.aps.org/Publisher


Abstract

We study the off-equilibrium dynamics of the three dimensional Ising spin glass in the presence of an external magnetic field. We have performed simulations both at fixed temperature and with an annealing protocol. Thanks to the Janus special-purpose computer, based on field-programmable gate array (FPGAs), we have been able to reach times equivalent to 0.01 s in experiments. We have studied the system relaxation both for high and for low temperatures, clearly identifying a dynamical transition point. This dynamical temperature is strictly positive and depends on the external applied magnetic field. We discuss different possibilities for the underlying physics, which include a thermodynamical spin-glass transition, a mode-coupling crossover, or an interpretation reminiscent of the random first-order picture of structural glasses.


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© 2014 American Physical Society. Artículo firmado por 24 autores. The Janus project has been partially supported by the EU (FEDER funds, Grant No. UNZA05-33-003, MEC-DGA, Spain); by the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013, ERC Grant agreement N. 247328); by the MICINN (Spain) (Contracts No. FIS2006-08533, No. FIS2012-35719-C02, No. FIS2010-16587, and No. TEC2010-19207); by the SUMA project of INFN (Italy); by CAM (Spain); by the Junta de Extremadura (GR10158); by the Microsoft Prize 2007 and by the European Union (PIRSES-GA-2011-295302). F.R.-T. was supported by the Italian Research Ministry through the FIRB Project No. RBFR086NN1; M.B.-J. was supported by the FPU program (Ministerio de Educación, Spain); R.A.B. and J.M.-G. were supported by the FPI program (Diputación de Aragón, Spain); S.P.-G. was supported by the ARAID foundation; finally, J.M.G.-N. was supported by the FPI program (Ministerio de Ciencia e Innovación, Spain).

Uncontrolled Keywords:Replica symmetry-breaking; Supercooled liquids; Forming ligquids; Ordered phase; Relaxation; Equilibrium; Computer; Behavior; Models; State.
Subjects:Sciences > Physics
Sciences > Physics > Physics-Mathematical models
ID Code:36929
Deposited On:19 Apr 2016 10:41
Last Modified:18 Oct 2019 14:52

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