The overlap parameter across an inverse first-order phase transition in a 3D spin-glass

Abstract

We investigate the thermodynamic phase transition taking place in the Blume–Capel model in the presence of quenched disorder in three dimensions. In particular, performing exchange Monte Carlo simulations, we study the behaviour of the order parameters across the first-order phase transition and its related coexistence region. This transition is inverse freezing.

Keywords:

• disordered systems
• statistical mechanics
• phase transitions

Notes

Note

1. In the limit, and we obtain the Edwards–Anderson model 43.