Mpemba effect in an anisotropically driven granular gas

Abstract

We demonstrate the existence, as well as determine the conditions, of a Mpemba effect - a counterintuitive phenomenon where a hotter system equilibrates faster than a cooler system when quenched to a cold temperature - in anisotropically driven granular gases. In contrast to earlier studies of Mpemba effect in granular systems, the initial states are stationary, making it a suitable system to experimentally study the effect. Our theoretical predictions for the regular, inverse and strong Mpemba effects agree well with results of event-driven molecular dynamics simulations of hard discs.

5 pages, 4 figures and supplemental material

References in corpus (4)

• Exponentially faster cooling in a colloidal system
• Mpemba effect in molecular gases under nonlinear drag
• Mpemba effect in inertial suspensions
• Overtaking while approaching equilibrium

Cited by in corpus (6)

• Hyper-acceleration of quantum thermalization dynamics by bypassing long-lived coherences: An analytical treatment
• Landau Theory for the Mpemba Effect Through Phase Transitions
• Mpemba effect in anisotropically driven inelastic Maxwell gases
• Strong non-exponential relaxation and memory effects in a fluid with non-linear drag
• Inducing and optimizing Markovian Mpemba effect with stochastic reset
• Mpemba-like effect protocol for granular gases of inelastic and rough hard disks