Heat fluctuations in Ising models coupled with two different heat baths

• Main Authors: Piscitelli, Antonio, Corberi, Federico, Gonnella, G.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2015
• Subjects: DRNTU::Science::Physics::Heat and thermodynamics
• Online Access: https://hdl.handle.net/10356/99525; http://hdl.handle.net/10220/25671
• Institution: Nanyang Technological University

Monte Carlo simulations of Ising models coupled to heat baths at two different temperatures are used to study a fluctuation relation for the heat exchanged between the two thermostats in a time τ. Different kinetics (single-spin-flip or spin-exchange Kawasaki dynamics), transition rates (Glauber or Metropolis), and couplings between the system and the thermostats have been considered. In every case the fluctuation relation is verified in the large τ limit, both in the disordered and in the low temperature phase. Finite-τ corrections are shown to obey a scaling behavior.