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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Is Cosmic Censorship special to General Relativity, or can it survive aviolation of equivalence principle? Recent studies have shown thatsingularities in Lorentz violating Einstein-Aether (or Horava-Lifhsitz)theories can lie behind a universal horizon in simple black hole spacetimes.Even infinitely fast signals cannot escape these universal horizons. We extendthis result, for an incompressible aether, to 3+1d dynamical or spinningspacetimes which possess inner killing horizons, and show that a universalhorizon always forms in between the outer and (would-be) inner horizons. Thisfinding suggests a notion of Cosmic Censorship, given that geometry in thesetheories never evolves beyond the universal horizon (avoiding potentiallysingular inner killing horizons). A surprising result is that there are 3distinct possible stationary universal horizons for a spinning black hole, onlyone of which matches the dynamical spherical solution. This motivates dynamicalstudies of collapse in Einstein-Aether theories beyond spherical symmetry,which may reveal instabilities around the spherical solution.

Cosmic Censorship in Lorentz Violating Theories of Gravity