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 show that the Einstein-aether theory of Jacobson and Mattingly (J&M) canbe understood in the framework of the metric-affine (gauge theory of) gravity(MAG). We achieve this by relating the aether vector field of J&M to certainpost-Riemannian nonmetricity pieces contained in an independent linearconnection of spacetime. Then, for the aether, a corresponding geometricalcurvature-square Lagrangian with a massive piece can be formulatedstraightforwardly. We find an exact spherically symmetric solution of ourmodel.Comment: Revtex4, 38 pages, 1 figur

Einstein-aether theory, violation of Lorentz invariance, and metric-affine gravity