Brownian systems perturbed by mild shear : comparing response relations

Asheichyk, Kiryl; Fuchs, Matthias; Krüger, Matthias

Brownian systems perturbed by mild shear : comparing response relations

Dateien

Asheichyk_2-5geqdwoiir1t7.pdfGröße: 1.28 MBDownloads: 16

Datum

2021

Autor:innen

Asheichyk, Kiryl

Fuchs, Matthias

Krüger, Matthias

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Physics: Condensed Matter. Institute of Physics Publishing (IOP). 2021, 33(40), 405101. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/1361-648X/ac0c3c

Zusammenfassung

We present a comprehensive study of the linear response of interacting underdamped Brownian particles to simple shear flow. We collect six different routes for computing the response, two of which are based on the symmetry of the considered system and observable with respect to the shear axes. We include the extension of the Green–Kubo relation to underdamped cases, which shows two unexpected additional terms. These six computational methods are applied to investigate the relaxation of the response towards the steady state for different observables, where interesting effects due to interactions and a finite particle mass are observed. Moreover, we compare the different response relations in terms of their statistical efficiency, identifying their relative demand on experimental measurement time or computational resources in computer simulations. Finally, several measures of breakdown of linear response theory for larger shear rates are discussed.

Fachgebiet (DDC)

530 Physik

Schlagwörter

Brownian motion, shear flow, linear response theory in statistical physics, fluctuation–dissipation theorem, Green–Kubo relations

Zitieren

ISO 690

ASHEICHYK, Kiryl, Matthias FUCHS, Matthias KRÜGER, 2021. Brownian systems perturbed by mild shear : comparing response relations. In: Journal of Physics: Condensed Matter. Institute of Physics Publishing (IOP). 2021, 33(40), 405101. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/1361-648X/ac0c3c

BibTex

@article{Asheichyk2021-07-30Brown-54566,
  year={2021},
  doi={10.1088/1361-648X/ac0c3c},
  title={Brownian systems perturbed by mild shear : comparing response relations},
  number={40},
  volume={33},
  issn={0953-8984},
  journal={Journal of Physics: Condensed Matter},
  author={Asheichyk, Kiryl and Fuchs, Matthias and Krüger, Matthias},
  note={Article Number: 405101}
}

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