# Quantum gravity: An astrophysical constraint

@article{Carroll2003QuantumGA, title={Quantum gravity: An astrophysical constraint}, author={Sean Carroll}, journal={Nature}, year={2003}, volume={424}, pages={1007-1008} }

A quantum theory of gravity is proving elusive. Observations of radiation from the Crab nebula now place even stronger constraints on the likelihood of detecting the effects of quantum gravity.

## 5 Citations

Cosmology: Synchrotron radiation and quantum gravity

- PhysicsNature
- 2004

Photons may evade a synchrotron radiation constraint on quantum gravity by violating the equivalence principle.

Improving Limits on Planck‐Scale Lorentz Symmetry Test Theories

- Physics
- 2004

In the recent quantum gravity literature there has been strong interest in the possibility of Planck-scale departures from Lorentz symmetry. I focus on two minimal test theories, a pure kinematics…

Introduction to Quantum-Gravity Phenomenology

- Physics
- 2004

After a brief review of the first phase of development of Quantum-Gravity Phenomenology, I argue that this research line is now ready to enter a more advanced phase: while at first it was legitimate…

Phenomenology of Planck-scale Lorentz-symmetry test theories

- Physics
- 2004

In the recent quantum-gravity literature, there has been considerable interest in exploring the possibility of Planck-scale departures from Lorentz symmetry, including possible modifications of the…

On species persistence-time distributions.

- Environmental ScienceJournal of theoretical biology
- 2012

## References

SHOWING 1-4 OF 4 REFERENCES

A strong astrophysical constraint on the violation of special relativity by quantum gravity

- PhysicsNature
- 2003

The observation of 100-MeV synchrotron radiation from the Crab nebula is used to improve the previous limit by a factor of 40 million, ruling out this type of Lorentz violation, and thereby providing an important constraint on theories of quantum gravity.

Ultraviolet modifications of dispersion relations in effective field theory.

- PhysicsPhysical review letters
- 2003

Effective field theory is applied and dimension-5 operators that do not mix with dimensions 3 and 4 and lead to cubic modifications of dispersion relations for scalars, fermions, and vector particles are identified.

Tests of quantum gravity from observations of γ-ray bursts

- PhysicsNature
- 1998

The recent confirmation that at least some γ-ray bursts originate at cosmological distances suggests that the radiation from them could be used to probe some of the fundamental laws of physics. Here…

Potential Sensitivity of Gamma-Ray Burster Observations to Wave Dispersion in Vacuo

- Physics
- 1997

The recent confirmation that at least some gamma-ray bursters (GRBs) are indeed at cosmological distances raises the possibility that observations of these could provide interesting constraints on…