Heat exchanges in coarsening systems
Date of Issue2011
School of Physical and Mathematical Sciences
This paper is a contribution to the understanding of the thermal properties of ageing systems where statistically independent degrees of freedom with greatly separated time scales are expected to coexist. Focusing on the prototypical case of quenched ferromagnets, where fast and slow modes can be respectively associated with fluctuations in the bulk of the coarsening domains and in their interfaces, we perform a set of numerical experiments specifically designed to compute the heat exchanges between different degrees of freedom. Our studies promote a scenario with fast modes acting as an equilibrium reservoir to which interfaces may release heat through a mechanism that allows fast and slow degrees to maintain their statistical properties independently.
DRNTU::Science::Physics::Atomic physics::Statistical physics
Journal of statistical mechanics : theory and experiment
© 2011 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of statistical mechanics: theory and experiment, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1088/1742-5468/2011/10/P10022].