Work

From Kardar-Parisi-Zhang Scaling to Soliton Proliferation in Josephson Junction Arrays

Year: 2025

Type: article

Abstract: We propose Josephson junction arrays as realistic platforms for observing nonequilibrium scaling laws characterizing the Kardar-Parisi-Zhang (KPZ) universality class, and space-time soliton proliferation. Focusing on a two-chain ladder geometry, we perform numerical simulations for the roughness function. Together with analytical arguments, our results predict KPZ scaling at intermediate time scales, extending over sufficiently long timescales to be observable, followed by a crossover to the asymptotic longtime regime governed by soliton proliferation.

Source: Physical Review Letters

DOI: 10.1103/y3j5-dknd

Authors: Mikheil Tsitsishvili, Reinhold Egger, Karsten Flensberg, Sebastian Diehl

Institutions: Heinrich Heine University Düsseldorf, University of Copenhagen, University of Cologne

Language: English

Topic: Theoretical and Computational Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funder: Deutsche Forschungsgemeinschaft