# Quantum gravitational optics

@article{Shore2003QuantumGO, title={Quantum gravitational optics}, author={Graham M. Shore}, journal={Contemporary Physics}, year={2003}, volume={44}, pages={503 - 521} }

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…

## 77 Citations

### Quantum gravitational optics in the field of a gravitomagnetic monopole

- Physics
- 2007

Vacuum polarization in QED in a background gravitational field induces interactions which effectively modify the classical picture of light rays as the null geodesies of spacetime. After a short…

### Quantum gravitational optics: the induced phase

- Physics
- 2008

The geometrical approximation of the extended Maxwell equation in curved spacetime incorporating interactions induced by the vacuum polarization effects is considered. Taking into account these QED…

### Fermat’s principle in quantum gravitational optics

- Physics
- 2006

Interactions incorporating the vacuum polarization effects in curved backgrounds modify the null cone structure in such a way that the photon trajectories would not be the space–time geodesics any…

### An overview of the gravitational spin Hall effect

- Physics
- 2019

In General Relativity, the propagation of electromagnetic waves is usually described by the vacuum Maxwell's equations on a fixed curved background. In the limit of infinitely high frequencies,…

### The causal structure of QED in curved spacetime: analyticity and the refractive index

- Physics
- 2008

The effect of vacuum polarization on the propagation of photons in curved spacetime is studied in scalar QED. A compact formula is given for the full frequency dependence of the refractive index for…

### Raychaudhuri equation in quantum gravitational optics

- Physics
- 2007

The equation of Raychaudhuri is one of the key concepts in the formulation of the singularity theorems introduced by Penrose and Hawking. In the present article, taking into account QED vacuum…

### The effect of gravitational tidal forces on renormalized quantum fields

- Physics
- 2012

A bstractThe effect of gravitational tidal forces on renormalized quantum fields propagating in curved spacetime is investigated and a generalisation of the optical theorem to curved spacetime is…

### Comparison of QG-induced dispersion with standard physics effects

- Physics
- 2004

One of the predictions of quantum gravity phenomenology is that, in situations where Planck-scale physics and the notion of a quantum spacetime are relevant, field propagation will be described by a…

### Graviton propagation and vacuum polarization in curved space

- Physics
- 2011

The effects of vacuum polarization arising from loops of massive scalar particles on graviton propagation in curved space are considered. Physically, they are due to curvature induced tidal forces…

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