Barrier Crossing in a Viscoelastic Bath

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Physical Review Letters. American Physical Society (APS). 2022, 128(2), 028001. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.128.028001
Zusammenfassung

We investigate the hopping dynamics of a colloidal particle across a potential barrier and within a viscoelastic, i.e., non-Markovian, bath and report two clearly separated timescales in the corresponding waiting time distributions. While the longer timescale exponentially depends on the barrier height, the shorter one is similar to the relaxation time of the fluid. This short timescale is a signature of the storage and release of elastic energy inside the bath that strongly increases the hopping rate. Our results are in excellent agreement with numerical simulations of a simple Maxwell model.

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ISO 690GINOT, Félix, Juliana CASPERS, Matthias KRÜGER, Clemens BECHINGER, 2022. Barrier Crossing in a Viscoelastic Bath. In: Physical Review Letters. American Physical Society (APS). 2022, 128(2), 028001. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.128.028001
BibTex
@article{Ginot2022-01-14Barri-56458,
  year={2022},
  doi={10.1103/PhysRevLett.128.028001},
  title={Barrier Crossing in a Viscoelastic Bath},
  number={2},
  volume={128},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Ginot, Félix and Caspers, Juliana and Krüger, Matthias and Bechinger, Clemens},
  note={Article Number: 028001}
}
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