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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Although highly successful, the Truncated Wigner Approximation (TWA) does notaccount for genuine many-body quantum interference between different solutionsof the mean-field equations of a bosonic many-body (MB) system. This rendersthe TWA essentially classical, where a large number of particles formally takesthe role of the inverse of Planck's constant $\hbar$. The failure to describegenuine interference phenomena, such as localization and scarring in Fockspace, can be seen as a virtue of this quasiclassical method, which therebyallows one to identify genuine quantum effects when being compared with "exact"quantum calculations that do not involve any a priori approximation. A ratherprominent cause for such quantum effects that are not accounted for by the TWAis the constructive interference between the contributions of symmetry-relatedtrajectories, which would occur in the presence of discrete symmetries providedthe phase-space distribution of the initial state and the observable to beevaluated feature a strong localization about the corresponding symmetrysubspaces. Here we show how one can conceive an augmented version of the TWAwhich can account for this particular effect. This augmented TWA effectivelyamounts to complementing conventional TWA calculations by separate TruncatedWigner simulations that are restricted to symmetric subspaces and involveweight factors that account for the dynamical stability of samplingtrajectories with respect to perpendicular deviations from those subspaces. Weillustrate the validity of this method at pre- as well as post-Ehrenfest timescales in prototypical Bose-Hubbard systems displaying chaotic classicaldynamics, where it also reveals the existence of additional MB interferenceeffects.

Symmetry-induced many-body quantum interference in chaotic bosonic systems: an augmented Truncated Wigner method