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

Vacuum Brans-Dicke theory can be self-consistently described in two frames,the Jordan frame (JF) and the conformally rescaled Einstein frame (EF), thetransformations providing an easy passage from one frame to the other at thelevel of actions and solutions. Despite this, the conformal frames areinequivalent describing different geometries. It is shown that the predictionsof the weak field lensing (WFL) observables in the EF are different from thoserecently obtained in the JF for the vacuum Brans-Dicke class 1 solution. Thevalue of the Brans-Dicke coupling parameter $\omega$ from the Cassinispacecraft experiment reveals the degree of accuracy needed to experimentallydistinguish the WFL measurements including the total magnification factor inthe two frames.

Vacuum Brans-Dicke theory in the Jordan and Einstein frames: can they be distinguished by lensing?