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Out-of-Equilibrium Determination of Critical Parameters for Continuous Phase
Transitions: Theory and Computational Details
Speaker Prof Matteo Lulli
Physics of Fluids Group, University of Twente, 7500AE Enschede, The Netherlands and Department of Applied Physics, Technische Universiteit Eindhoven, 5600 MB
Eindhoven, The Netherlands
Date 6 January 2017 (Friday)
Time 15:00 - 16:00
Venue Room 4504 (Lifts 25-26), HKUST
In this talk I will show the results concerning a new technique for the determination of critical parameters (critical exponents and critical temperature) for a system undergoing a second-order phase transition in the out-of-equilibrium relaxation regime. The method is completely general and relies on a finitetime/finite-size scaling Ansatz justified in the framework of the Renormalization Group (RG) [1]. I will show
the results concerning the three-dimensional Ising spin-glass for which such an approach is mostly useful due to its extremely slow dynamics. I will also discuss the numerical technique (Metropolis Montecarlo) and its implementation on single- and multi-GPU systems, paying some attention at pseudo-random numbers generation [2].
  1. M. Lulli, G. Parisi and A. Pelissetto, PRE 93, 032126 (2016), http://dx.doi.org/10.1103/PhysRevE.93.032126
  2. M. Lulli, M. Bernaschi and G. Parisi, CPC 196 (2015) 290–303, http://dx.doi.org/10.1016/j.cpc.2015.06.019