Accelerating, to some extent, the $p$-spin dynamics

We consider a detailed-balance violating dynamics whose stationary state is a prescribed Boltzmann distribution. Such dynamics have been shown to be faster than any equilibrium counterpart. We quantify the gain in convergence speed for a system whose energy landscape displays one, and then an infinite number of, energy barriers. In the latter case, we work with the mean-field disordered $p$-spin, and show that the convergence to equilibrium or to the nonergodic phase is accelerated, both during the $β$ and $α$-relaxation stages. An interpretation in terms of trajectories in phase space and of an accidental fluctuation-dissipation theorem is provided.

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