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SKM 2023 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 34: Statistical Physics: Far From Equilibrium II

DY 34.6: Vortrag

Mittwoch, 29. März 2023, 18:00–18:15, ZEU 250

New phases and peculiar fluctuations in nonreciprocal systems — •Sarah Loos — DAMTP, University of Cambridge, UK

Nonreciprocal interactions, i.e., interactions that violate the actio=reactio principle, occur in various biological and artificial nonequilibrium systems on a wide range of scales. For example, a bird in a flock may react to the movements of the bird in front of it, while the reverse interaction is zero, simply due to missing visual information. Recent research shows that the occurrence of such nonreciprocal interactions can have a dramatic impact on the self-organization of many-body systems [1], and on their thermodynamic properties [2]. In this talk, we will consider a nonequilibrium lattice model with vision cone interactions [3], and show how the presence of nonreciprocal interactions can lead to the emergence of new phases and peculiar fluctuations.

[1] Fruchart, Non-reciprocal phase transitions, Nature (2021).

[2] S.A.M. Loos and S.H.L. Klapp, NJP 22, 123051 (2020).

[3] S.A.M. Loos, S.H.L. Klapp, and T. Martynec, ArXiv:2206.10519 (2022).

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