| Issue |
EPL
Volume 139, Number 5, September 2022
|
|
|---|---|---|
| Article Number | 51001 | |
| Number of page(s) | 6 | |
| Section | Statistical physics and networks | |
| DOI | https://doi.org/10.1209/0295-5075/ac85d6 | |
| Published online | 11 August 2022 | |
Non-Arrhenius barrier crossing dynamics of non-equilibrium non-Markovian systems
Freie Universität Berlin, Fachbereich Physik - 14195 Berlin, Germany
(a) lauraluna@zedat.fu-berlin.de
(b) rnetz@physik.fu-berlin.de (corresponding author)
Received: 19 May 2022
Accepted: 1 August 2022
The non-equilibrium non-Markovian barrier crossing dynamics of a one-dimensional massive coordinate, described by the non-equilibrium version of the generalized Langevin equation with unequal random and friction relaxation times, is studied by simulations and analytical methods. Within a harmonic approximation, a general formula for the barrier crossing time is derived which agrees favorably with simulations. Non-equilibrium random forces with a relaxation time longer than the friction relaxation time induce non-Arrhenius behavior and dramatically increase the barrier crossing time; within the harmonic theory this corresponds to a reduced effective temperature which also modifies the spatial and velocity distributions.
© 2022 The author(s)
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