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

The Bogoliubov procedure in quantum field theory is used to describe arelativistic almost ideal Bose gas at zero temperature. Special attention isgiven to the study of a vortex. The radius of the vortex in the fielddescription is compared to that obtained in the relativistic fluidapproximation. The Kelvin waves are studied and, for long wavelengths, thedispersion relation is obtained by an asymptotic matching method and comparedwith the non relativistic result.Comment: 20 page

Vortex in a weakly relativistic Bose gas at zero temperature and relativistic fluid approximation