New constraints on quantum foam models from X-ray and gamma-ray observations of distant quasars
arXiv:1607.08551
Abstract
Astronomical observations of distant quasars may be important to test models for quantum gravity, which posit Planck-scale spatial uncertainties ('spacetime foam') that would produce phase fluctuations in the wavefront of radiation emitted by a source, which may accumulate over large path lengths. We show explicitly how wavefront distortions cause the image intensity to decay to the point where distant objects become undetectable if the accumulated path-length fluctuations become comparable to the wavelength of the radiation. We also reassess previous efforts in this area. We use X-ray and gamma-ray observations to rule out several models of spacetime foam, including the interesting random-walk and holographic models.
arXiv comment7 pages, 2 figures, from MG14 meeting in Rome
References in corpus (7)
- The World as a Hologram
- Selected topics in Planck-scale physics
- No quantum gravity signature from the farthest quasars
- Limits on Spacetime Foam
- Quantum gravity without vacuum dispersion
- Developed Matrix inequalities via Positive Multilinear Mappings
- Detectability of Planck-Scale-Induced Blurring with Gamma-Ray Bursts