| Full text | |
| Author(s): |
Shabad, A. E.
Total Authors: 1
|
| Document type: | Journal article |
| Source: | THEORETICAL AND MATHEMATICAL PHYSICS; v. 187, n. 3, p. 813-822, JUN 2016. |
| Web of Science Citations: | 1 |
| Abstract | |
In theories whose Lorentz invariance is violated by the presence of an external tensor of any rank, we show that a signal velocity, understood as the group velocity of a wave, is added to the velocity of the reference frame according to the standard relativistic rule for adding velocities. In the case where we have a superluminal signal, this observation allows creating a closed time cycle and thus coming to a conclusion about a causality violation even in the absence of relativistic invariance. We also reveal an optical anisotropy of a moving medium that is isotropic at rest. (AU) | |
| FAPESP's process: | 14/08970-1 - Nonlinear effects in basic problems of quantum electrodynamics |
| Grantee: | Dmitri Maximovitch Guitman |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |