SKM 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 40: Stochastic Thermodynamics

DY 40.8: Vortrag

Donnerstag, 30. März 2023, 12:00–12:15, ZEU 250

Irreversible fluctuations herald dynamical phases in non-Hermitian phase-field models — •Thomas Suchanek1, Klaus Kroy1, and Sarah Loos21Institut für Theoretische Physik, Universität Leipzig, Leipzig, Germany — 2DAMTP, University of Cambridge, Cambridge, United Kingdom

We study the time-reversal symmetry (TRS) breaking of fluctuations in phase-field models that exhibit dynamical phases. We focus on two typical scenarios in which dynamical phases can be born, namely, oscillatory instabilities and the recently uncovered PT-symmetry breaking transitions in non-Hermitian systems [1] that are accompanied by Exceptional Points. Quantifying the TRS breaking by the informatic entropy production rate [2] and analytically investigating the zero noise limit, we find divergent behavior at both transitions. We discuss an example model of two nonreciprocally coupled Chan-Hilliard fields, and offer interpretations of the TRS breaking in terms of interface dynamics, the PT-symmetry breaking and the amplification of dissipative noise near Exceptional Point transitions.

[1] M. Fruchart, R. Hanai, P. B. Littlewood, and V. Vitelli, Non-reciprocal phase transitions, Nature 592, 363-369 (2021).

[2] C.Nardini, E. Fodor, E. Tjhung, F. van Wijland, J. Tailleur, and M. E. Cates, Entropy production in field theories without time-reversal symmetry: Quantifying the non-equilibrium character of active matter, Phys. Rev. X 7, 021007 (2017).

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2023 > SKM