title: Memory effect in uniformly heated granular gases.
abstract: We evidence a Kovacs-like memory effect in a uniformly driven granular gas. A system of inelastic hard particles, in the low density limit, can reach a nonequilibrium steady state when properly forced. By following a certain protocol for the drive time dependence, we prepare the gas in a state where the granular temperature coincides with its long time value. The temperature subsequently does not remain constant but exhibits a nonmonotonic evolution with either a maximum or a minimum, depending on the dissipation and on the protocol. We present a theoretical analysis of this memory effect at Boltzmann-Fokker-Planck equation level and show that when dissipation exceeds a threshold, the response can be called anomalous. We find excellent agreement between the analytical predictions and direct Monte Carlo simulations.
authors.affiliation: Université Paris-Sud, Laboratoire de Physique Théorique et Modèles Statistiques, UMR CNRS 8626, F-91405 Orsay, France.
authors.forename: E
authors.initials: E
authors.lastname: Trizac
authors.affiliation: Université Paris-Sud, Laboratoire de Physique Théorique et Modèles Statistiques, UMR CNRS 8626, F-91405 Orsay, France and Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Prados
mesh_terms: D005740:Gases; D006358:Hot Temperature; D008962:Models, Theoretical; D010316:Particle Size; D013997:Time Factors
chemical_list: D005740:Gases