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

The properties of Green's functions and various correlation functions ofdensity and spin operators are considered in a homogeneous spin-1 Bose gas indifferent phases. The dielectric formalism is worked out and the partialcoincidence of the one-particle and collective spectra is pointed out below thetemperature of Bose-Einstein condensation. As an application the formalism isused to give two approximations for the propagators and the correlationfunctions and the spectra of excitations including shifts and widths due to thethermal cloud.Comment: 34 pages, 17 figure

Structure of the perturbation series of the spin-1 Bose gas at low temperatures