Publication:
Nonequilibrium spin glass dynamics with Janus

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2009
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American Institute of Physics
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The out of equilibrium evolution for an Edwards‐Anderson spin glass is followed for a tenth of a second, a long enough time to let us make safe predictions about the behaviour at experimental scales. This work has been made possible by Janus, an FPGA based special purpose computer. We have thoroughly studied the spin glass correlation functions and the growth of the coherence length for L = 80 lattices in 3D. Our main conclusion is that these spin glasses follow noncoarsening dynamics, at least up to the experimentally relevant time scales.
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© 2009 American Institute of Physics. Artículo firmado por 19 autores. Proceedings of modeling and simulation of new materials : Granada lectures (10. 2008. Granada, España). Janus was sopported by EU FEDER funds, (UNZA05-33-003, MEC-DGA, Spain). We were partially supported by MEC (Spain), through contracts No. FIS2006-08533, FIS2007-60977, FPA2004-02602, TEC2007-64188; by CAM (Spain) and by Microsoft. D. Yllanes acknowledges support from the FPU programme, ref. AP2007-01149.
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1) J.A. Mydosh, Spin Glasses: an experimental introduction, Taylor and Francis, 1993 -- Vincent, et al., in Complex behavior of complex systems, Lecture Notes in Physics, 492. 2) F. Belletti, et al. (the Janus Collaboration), Phys. Rev. Lett., 101, 157201 (2008). 3) See F. Belletti, et al., Comp. Phys. Comm., 178, 208, 2008 -- F. Belletti, et al., this volume. 4) H.G. Ballesteros, et al., Phys. Rev. B, 62, 14237, 2000 -- M. Palassini, S. Caracciolo, Phys. Rev. Lett., 82, 5128, 1999 -- K.G. Gunnarsson, et al., Phys. Rev. B., 43, 8199, 1991. 5) M. Hasenbusch, A. Pelissetto, E. Vicari, J. Stat. Mech., L02001, 2008. 6) D.S. Fisher, D.A. Huse, Phys. Rev. Lett., 56, 1601, 1986 -- ibid., Phys. Rev. B, 38, 386, 1988. 7) E. Marinari, et al., J. Stat. Phys., 98, 973, 2000. 8) F. Krzakala, O.C. Martin, Phys. Rev. Lett., 85, 3103, 2000 -- M. Palassini, P. Young, Phys. Rev. Lett., 85, 3017, 2000.
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