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تسجيل مستخدم جديدUniversal non-exponential relaxation and memory effects in a fluid with non-linear drag
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We analyse the dynamical evolution of a fluid with non-linear drag, for which binary collisions are elastic, at the kinetic level of description. When quenched to low temperatures, the system displays a really complex behaviour. The glassy response of the system is controlled by a long-lived non-equilibrium state, and includes non-exponential, algebraic, relaxation and strong memory effects in the time evolution of its kinetic temperature. Moreover, the observed behaviour is universal, in the sense that the time evolution of the temperature -- for both relaxation and memory effects -- falls onto a master curve, regardless of the details of the experiment. Our theoretical predictions are checked against simulations of the kinetic equation, and an excellent agreement is found.
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