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Dynamical phase transitions in the two-dimensional ANNNI model. (English) Zbl 1086.82526

Summary: We study the phase diagram of the two-dimensional anisotropic next-nearest neighbor Ising (ANNNI) model by comparing the time evolution of two distinct spin configurations submitted to the same thermal noise. We clearly see several dynamical transitions between ferromagnetic, paramagnetic, antiphase, and floating phases. These dynamical transitions seem to occur rather close to the transition lines determined previously in the literature.

MSC:

82B26 Phase transitions (general) in equilibrium statistical mechanics
82-04 Software, source code, etc. for problems pertaining to statistical mechanics
82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs arising in equilibrium statistical mechanics
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