Abstract
High-sensitivity measurements in atomic spectroscopy were recently used by Amelino-
Camelia et al. (Phys. Rev. Lett., 103 (2009) 171302) to constraint the form of possible
modifications of the energy-momentum dispersion relation resulting from Lorentz invariance
violation (LIV). In this letter we show that the same data can be used successfully to
set experimental bounds on deformations of the energy-momentum composition rule. Such
modifications are natural in models of deformed Lorentz symmetry which are relevant in certain
quantum gravity scenarios. We find the bound for the deformation parameter κ to be a few orders
of magnitude below the Planck scale and of the same magnitude as the next-to-leading–order
effect found by Amelino-Camelia et al. in the above-mentioned paper. We briefly discuss how it
would be possible to distinguish between these two scenarios.
| Original language | English |
|---|---|
| Pages (from-to) | 30006/1-3006/5 |
| Number of pages | 5 |
| Journal | Europhysics Letters |
| Volume | 90 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2010 |