15276

Aging in the three-dimensional Random Field Ising Model

Sebastian von Ohr, Markus Manssen, Alexander K. Hartmann
Institute of Physics, Carl von Ossietzky University, 26111 Oldenburg, Germany
arXiv:1601.02455 [cond-mat.stat-mech], (11 Jan 2016)
@article{ohr2016aging,

   title={Aging in the three-dimensional Random Field Ising Model},

   author={Ohr, Sebastian von and Manssen, Markus and Hartmann, Alexander K.},

   year={2016},

   month={jan},

   archivePrefix={"arXiv"},

   primaryClass={cond-mat.stat-mech}

}

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We studied the nonequilibrium aging behavior of the Random Field Ising Model in three dimensions for various values of the disorder strength. This allowed us to investigate how the aging behavior changes across the ferromagnetic-paramagnetic phase transition. We investigated a large system size of $N=256^3$ spins and up to $10^8$ Monte Carlo sweeps. To reach these necessary long simulation times we employed an implementation running on Intel Xeon Phi coprocessors, reaching single spin flip times as short as 6 ps. We measured typical correlation functions in space and time to extract a growing length scale and corresponding exponents.
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