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/

Zendy Plus

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

Zendy Tools

Zendy Open

In this paper the equation of circular loops of cosmic string with periodictension is investigated in the Minkowski spacetime and Robertson-Walkeruniverse respectively. We find that the cosmic string loops possessing thiskind of time-varying tension will evolve to oscillate instead of collapsing toform a black hole if their initial radii are not small enough.

The evolution of circular loops of a cosmic string with periodic tension