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

In this paper, we have studied a 5-dimensional warped product space-time witha time-dependent warp factor. This warp factor plays an important role inlocalizing matter to the 4-dimensional hypersurface constituting the observeduniverse and leads to a geometric interpretation of dynamical dark energy. Thefive-dimensional field equations are constructed and its solutions areobtained. The nature of modifications produced by this warp factor in the bulkgeometry is discussed. The hypersurface is described by a flat FRW-type metricin the ordinary spatial dimension. It is found that the effective cosmologicalconstant of the four-dimensional universe is a variable quantity monitored bythe time-dependent warp factor. The universe is initially decelerated, butsubsequently makes a transition to an accelerated phase at later times.

Five-dimensional warped product space-time with time-dependent warp factor and cosmology of the four-dimensional universe