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

We perform Random Phase Approximation (RPA) study of collective excitationsin the bose-fermi mixed degenerate gas of Alkali-metal atoms at T=0. Thecalculation is done by diagonalization in a model space composed ofparticle-hole type excitations from the ground state, the latter being obtainedfrom the coupled Gross-Pitaevskii and Thomas-Fermi equations. We investigatestrength distributions for different combinations of bose and fermi multipole($L$) operators with $L=0,1,2,3$. Transition densities and dynamical structurefactors are calculated for collective excitations. Comparison with the sum ruleprediction for the collective frequency is given. Time dependent behavior ofthe system after an external impulse is studied.Comment: 28 pages, 13 figures, submitted to Phys. Rev.

Random-phase approximation study of collective excitations in the Bose-Fermi mixed condensate of alkali-metal gases