Impossibility of superluminal travel in Lorentz violating theories

Details Impossibility of superluminal travel in Lorentz violating theories Impossibility of superluminal travel in Lorentz violating theories

2011-11-18

arxiv.org/abs/1111.4356v2

Phys. Rev. D 85, 064020 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 3 figures

Scientific paper

10.1103/PhysRevD.85.064020

Warp drives are space-times allowing for superluminal travel. However, they are quantum mechanically unstable because they produce a Hawking-like radiation which is blue shifted at their front wall without any bound. We reexamine this instability when local Lorentz invariance is violated at ultrahigh energy by dispersion, as in some theories of quantum gravity. Interestingly, even though the ultraviolet divergence is now regulated, warp drives are still unstable. Moreover the type of instability is different whether one uses a subluminal or a superluminal dispersion relation. In the first case, a black-hole laser yields an exponential amplification of the emitted flux whereas, in the second, infrared effects produce a linear growth of that flux. These results suggest that chronology could still be protected when violating Lorentz invariance.

Affiliated with

Also associated with

No associations

Rating

Impossibility of superluminal travel in Lorentz violating theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Impossibility of superluminal travel in Lorentz violating theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impossibility of superluminal travel in Lorentz violating theories will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-549487