English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate the relative phase between two weakly interacting 1Dcondensates of bosonic atoms after suddenly switching on the tunnel-coupling.The following phase dynamics is governed by the quantum sine-Gordon equation.In the semiclassical limit of weak interactions, we observe the parametricamplification of quantum fluctuations leading to the formation of breatherswith a finite lifetime. The typical lifetime and density of the these'quasibreathers' are derived employing exact solutions of the classicalsine-Gordon equation. Both depend on the initial relative phase between thecondensates, which is considered as a tunable parameter.

Localized phase structures growing out of quantum fluctuations in a quench of tunnel-coupled atomic condensates