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

We present exact non-singular bounce solutions of general relativity in thepresence of a positive cosmological constant and an electromagnetic field,without any exotic matter. The solutions are distinguished by being spatiallyinhomogeneous in one direction, while they can also contain non-trivialelectromagnetic field lines. The inhomogeneity may be substantial, forinstance, there can be one bounce in one region of the universe and two bounceselsewhere. Since the bounces are followed by a phase of accelerated expansion,the metrics described here also permit the study of (geodesically complete)models of inflation with inhomogeneous initial conditions. Our solutions admittwo Killing vectors and may be re-interpreted as the pathology-free interiorregions of Kerr-de Sitter black holes with non-trivial NUT charge. Remarkablyenough, within this cosmological context, the NUT parameter does not introduceany string singularity nor closed timelike curves but renders the geometryeverywhere regular, eliminating the big bang singularity by means of a bounce.

Kerr-NUT-de Sitter as an Inhomogeneous Non-Singular Bouncing Cosmology