Testing quantumspacetime relativity with gammaray telescopes
Abstract
Observations of gammaray bursts are being used to test for a momentum dependence of the speed of photons, partly motivated by preliminary results reported in analyses of some quantumspacetime scenarios. The relationship between time of arrival, momentum of the photon and redshift of the source which is used for these purposes assumes a "breakdown" of relativistic symmetries, meaning that it is a preferredframe scenario which does not satisfy the Relativity Principle. The alternative hypothesis of a "deformation" of relativistic symmetries, which preserves the Relativity Principle by adopting deformed laws of relativistic transformation between observers, could not so far be tested in gammarayburst observations because it was not known how to formulate it in expanding spacetimes. We here provide such a formulation, and we find that also for the symmetrydeformation scenario the analysis of gammarayburst data take us very close to the desired "Planckscale sensitivity".
 Publication:

arXiv eprints
 Pub Date:
 May 2010
 arXiv:
 arXiv:1006.0007
 Bibcode:
 2010arXiv1006.0007A
 Keywords:

 Astrophysics  High Energy Astrophysical Phenomena;
 General Relativity and Quantum Cosmology
 EPrint:
 v2: more comments on the implications of the relevant test theories for quantumgravity research