@misc{10481/69511,
year = {2021},
month = {6},
url = {http://hdl.handle.net/10481/69511},
abstract = {We study a granular gas of viscoelastic particles (kinetic energy loss upon collision is a function of the particles’ relative velocities at impact)
subject to a stochastic thermostat. We show that the system displays anomalous cooling and heating rates during thermal relaxation
processes, this causing the emergence of thermal memory. In particular, a significant Mpemba effect is present, i.e., an initially hotter/cooler
granular gas can cool down/heat up faster than an in comparison cooler/hotter granular gas. Moreover, a Kovacs effect is also observed, i.e., a
nonmonotonic relaxation of the granular temperature—if the gas undergoes certain sudden temperature changes before fixing its value. Our
results show that both memory effects have distinct features, very different and eventually opposed to those reported in theory for granular
fluids under simpler collisional models. We study our system via three independent methods: approximate solution of the kinetic equation
time evolution and computer simulations (both molecular dynamics simulations and direct simulation Monte Carlo method), finding good
agreement between them.},
organization = {Extremadura Government
	GR18079,IB16087},
organization = {Ministerio de Ciencia, Innovación y Universidades

	MCIU},
organization = {European Regional Development Fund

	ERDF},
organization = {Agencia Estatal de Investigación

FIS2016-76359-P,FIS2017-84440-C2–2-P,MTM2017-84446-C2–2-R	AEI},
publisher = {AIP Publishing},
title = {Memory effects in a gas of viscoelastic particles},
doi = {10.1063/5.0050804},
author = {Mompó, E. and López Castaño, M. A. and Lasanta Becerra, Antonio and Vega Reyes, F. and Torrente, A.},
}