Tuesday, June 25, 2013

1306.5457 (S. Deser et al.)

Massive Gravity Acausality Redux    [PDF]

S. Deser, K. Izumi, Y. C. Ong, A. Waldron
Massive gravity (mGR) is a 5(=2s+1) degree of freedom, finite range extension of GR. However, amongst other problems, it is plagued by superluminal propagation, first uncovered via a second order shock analysis. First order mGR shock structures have also been studied, but the existence of superluminal propagation in that context was left open. We present here a concordance of these methods, by an explicit (first order) characteristic matrix computation, which confirms mGR's superluminal propagation and acausality.
View original: http://arxiv.org/abs/1306.5457

No comments:

Post a Comment