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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we study the homogeneous one-dimensional bosonic gasinteracting via a repulsive contact potential by using the improved Gaussianapproximation. We obtain the gapless excitation spectrum of Bogoliubov mode.Our result is in good agreement with the exact numerical calculation based onthe Bethe ansatz. We speculate that the improved Gaussian approximation couldbe a quantitatively good approximation for higher dimensional systems.

The improved Gaussian approximation Calculation of Bogoliubov Mode in One Dimensional Bosonic Gas