Astrophysical limits on quantum gravity motivated birefringence

Details Astrophysical limits on quantum gravity motivated birefringence Astrophysical limits on quantum gravity motivated birefringence

2001-02-21

arxiv.org/abs/gr-qc/0102093v1

Phys.Rev. D64 (2001) 083007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevD.64.083007

We obtain observational upper bounds on a class of quantum gravity related
birefringence effects, by analyzing the presence of linear polarization in the
optical and ultraviolet spectrum of some distant sources. In the notation of
Gambini and Pullin we find $\chi < 10^{-3}$.

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