Quantum gravitational optics

@article{Shore2003QuantumGO,
  title={Quantum gravitational optics},
  author={Graham M. Shore},
  journal={Contemporary Physics},
  year={2003},
  volume={44},
  pages={503 - 521}
}
  • G. Shore
  • Published 15 April 2003
  • Physics
  • Contemporary Physics
In quantum theory, the curved spacetime of Einstein's general theory of relativity acts as a dispersive optical medium for the propagation of light. Gravitational rainbows and birefringence replace the classical picture of light rays mapping out the null geodesics of curved spacetime. Even more remarkably, superluminal propagation becomes a real possibility, raising the question of whether it is possible to send signals into the past. In this article, we review recent developments in the… 

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References

SHOWING 1-10 OF 77 REFERENCES

QED Vacuum Polarization in a Background Gravitational Field and Its Effect on the Velocity of Photons

We calculate in QED the contribution to the photon effective action from one-loop vacuum polarization on a general curved background manifold, and use it to investigate the corrections to the local

Gain-assisted superluminal light propagation

Gain-assisted linear anomalous dispersion is used to demonstrate superluminal light propagation in atomic caesium gas and is observed to be a direct consequence of classical interference between its different frequency components in an anomalously dispersion region.

BIMETRIC GRAVITY THEORY, VARYING SPEED OF LIGHT AND THE DIMMING OF SUPERNOVAE

In the bimetric scalar–tensor gravitational theory there are two frames associated with the two metrics ĝμν and gμν, which are linked by the gradients of a scalar field ϕ. The choice of a comoving

Introducing Einstein's Relativity

The aim of this book is to provide the reader with a sound mathematical introduction to Einstein’s theory of relativity, both special relativity and general relativity, as well as an understanding

Geometrodynamics of variable-speed-of-light cosmologies

Variable-speed-of-light (VSL) cosmologies are currently attracting interest as an alternative to inflation. We investigate the fundamental geometrodynamic aspects of VSL cosmologies and provide

CPT violation: mechanism and phenomenology ∗

A new mechanism for T and CPT violation is reviewed, which relies on chiral fermions, gauge interactions and nontrivial spacetime topology. Also discussed are the possible effects on the propagation

Lorentz-Violating Extension of the Standard Model

In the context of conventional quantum field theory, we present a general Lorentz-violating extension of the minimal

Particle creation by black holes

AbstractIn the classical theory black holes can only absorb and not emit particles. However it is shown that quantum mechanical effects cause black holes to create and emit particles as if they were
...