Abstract

For the study of Planck-scale modifications of the energy–momentum dispersion relation, which had been previously focused on the implications for ultrarelativistic particles, we consider the possible role of experiments involving nonrelativistic particles, and particularly atoms. We extend a recent result establishing that measurements of ‘atom-recoil frequency’ can provide an insight that is valuable for some theoretical models. From a broader perspective we analyze the complementarity of the nonrelativistic and the ultrarelativistic regimes in this research area.

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