Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure — mentioned by raattgift

Sun, 12 Feb 2017 17:17:49 GMT

I'll try to answer that via a couple of concrete examples of theories that deliberately set the speed of gravity and light at different values for good reasons. The short answer is that General Relativity (GR) predicts that the speed of light is equal to the speed of gravitational waves. In order to have a difference between the speed, one needs a different theory from GR. Moreover, the equality of the speed is well-tested at solar system scales; there is good evidence that at least within a few billion light years from here the speeds are the same; and there is good evidence that for at…

Paper and discussion history. A mention is not an endorsement.

Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure — mentioned by raattgift

Sun, 12 Feb 2017 12:16:50 GMT

The preprint is here: https://arxiv.org/abs/1602.07670

Paper and discussion history. A mention is not an endorsement.

Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure · HackerPapers discussions

Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure — mentioned by raattgift

Challenges to Self-Acceleration in Modified Gravity from Gravitational Waves and Large-Scale Structure — mentioned by raattgift