Thermodynamic first order transition and inverse freezing in a 3D spin-glass

Details Thermodynamic first order transition and inverse freezing in a 3D spin-glass Thermodynamic first order transition and inverse freezing in a 3D spin-glass

2009-11-05

arxiv.org/abs/0911.1152v2

Phys. Rev. Lett. 104, 120602 (2010)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 3 figures;

Scientific paper

10.1103/PhysRevLett.104.120602

We present a numerical study of the random Blume-Capel model in three dimension. The phase diagram is characterized by spin-glass/paramagnet phase transitions both of first and second order in the thermodynamic sense. Numerical simulations are performed using the Exchange-Monte Carlo algorithm, providing clear evidence for inverse freezing. The main features at criticality and in the phase coexistence region are investigated. We are not privy to other 3D short-range systems with quenched disorder undergoing inverse freezing.

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