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

We obtain axionic charged primordial black holes on a vacuum createdgravitational pair of $(3{\bar 3})$-brane by the Kalb-Ramond field on a$D_4$-brane in presence of a background open string metric. The new geometrieson an emergent pair of $(3{\bar 3})$-brane universe is shown to be influencedby the non-perturbative quantum effects underlying a geometric torsion in asecond order formalism. The presence of small extra dimensions transverse tothe pair in the formalism ensures dynamical scalar fields hidden to a $3$-braneor an anti 3-brane universe. We investigate the non-perturbative quantum vacuafor their characteristic properties to explain the accelerated expansion of ouruniverse. Interestingly the emergent brane universe is shown to possess itsorigin in a degenerate stringy de Sitter vacua at an early epoch. Anon-perturbative $D_p$-brane world volume correction for $p < 3$ is worked outto explain some of the quantum effects underlying a quintessence axion in thestring-brane setup. Our analysis reveals that a $D$-instanton can be apotential candidate to source the dark energy in our brane universe.

Non-perturbative quantum effects in stringy degenerate geometries: Vacuum created pair of $(D{\bar D})_3$-brane by a two form