Fachbereich Physik

Jul 17, 2024 | link.aps.org | Roland R. Netz |Fachbereich Physik |Freie Universität Berlin

It has become standard practice to describe systems that remain far from equilibrium even in their steady state by Langevin equations with colored noise which is chosen independently from the friction contribution. Since these Langevin equations are typically not derived from first-principle Hamiltonian dynamics, it is not clear whether they correspond to physically realizable scenarios.

Nov 30, 2023 | link.aps.org | Amir Ali Abbasi |Fachbereich Physik |Freie Universität Berlin |Roland R. Netz

Based on a Hamiltonian that incorporates the elastic coupling between a tracer particle and the embedding active viscoelastic biomatter, we derive a generalized non-Markovian Langevin model for the nonequilibrium mechanical tracer response.