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Long-Range Order and Directional Defect Propagation in the Nonreciprocal XY Model with Vision Cone Interactions.

Published version
Peer-reviewed

Repository DOI


Type

Article

Change log

Authors

Loos, Sarah AM 
Klapp, Sabine HL 
Martynec, Thomas 

Abstract

We study a two-dimensional, nonreciprocal XY model, where each spin interacts only with its nearest neighbors in a certain angle around its current orientation, i.e., its "vision cone." Using energetic arguments and Monte Carlo simulations, we show that a true long-range ordered phase emerges. A necessary ingredient is a configuration-dependent bond dilution entailed by the vision cones. Strikingly, defects propagate in a directional manner, thereby breaking the parity and time-reversal symmetry of the spin dynamics. This is detectable by a nonzero entropy production rate.

Description

Keywords

51 Physical Sciences, 5103 Classical Physics

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

130

Publisher

American Physical Society (APS)
Sponsorship
Horizon Europe UKRI Underwrite MSCA (EP/X031926/1)