Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-08-27
Phys.Rev. D66 (2002) 124006
Physics
High Energy Physics
High Energy Physics - Theory
48 pages, latex
Scientific paper
10.1103/PhysRevD.66.124006
Quantum gravity phenomenology opens up the possibility of probing Planck scale physics. Thus, by exploiting the generic properties that a semiclassical state of the compound system fermions plus gravity should have, an effective dynamics of spin-1/2 particles is obtained within the framework of loop quantum gravity. Namely, at length scales much larger than Planck length and below the wave length of the fermion, the spin-1/2 dynamics in flat spacetime includes Planck scale corrections. In particular we obtain modified dispersion relations in vacuo for fermions. These corrections yield a time of arrival delay of the spin 1/2 particles with respect to a light signal and, in the case of neutrinos, a novel flavor oscillation. To detect these effects the corresponding particles must be highly energetic and should travel long distances. Hence Neutrino Bursts accompanying Gamma Ray Bursts or ultra high energy cosmic rays could be considered. Remarkably, future neutrino telescopes may be capable to test such effects. This paper provides a detailed account of the calculations and elaborates on results previously reported in a Letter. These are further amended by introducing a real parameter Upsilon aimed at encoding our lack of knowledge of scaling properties of the gravitational degrees of freedom.
Alfaro Jorge
Morales-Tecotl Hugo A.
Urrutia Luis F.
No associations
LandOfFree
Quantum gravity and spin 1/2 particles effective dynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum gravity and spin 1/2 particles effective dynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum gravity and spin 1/2 particles effective dynamics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-644588