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

We investigate a system of $N$ spinless bosons confined inquasi-two-dimensional harmonic trap with repulsive two-body finite-rangeGaussian interaction potential of large $s$-wave scattering length. Exactdiagonalization of the Hamiltonian matrix is carried out to obtain the $N$-bodyground state as well as low-lying excited states, using Davidson algorithm inbeyond lowest-Landau-level approximation. We examine the finite-range effectsof the interaction potential on the many-body ground state energy as also thedegree of condensation of the Bose-condensed gas. The results obtained indicatethat the finite-range Gaussian interaction potential enhances the degree ofcondensation compared to the zero-range interaction potential. We furtheranalyze the effect of finite-range interaction potential on the breathing modecollective excitation. Our theoretical results may be relevant for experimentscurrently conducted on quasi-two-dimensional Bose gas with more realisticinteraction potential.

Exact Diagonalization Study of Bose-Condensed Gas with Finite-Range Gaussian Interaction