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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Constraining the energy-momentum dispersion relation with Planck-scale sensitivity using cold atoms
Giovanni Amelino-Camelia1, Claus Lämmerzahl, Claus Laemmerzahl
1Dipartimento di Fisica, Università di Roma La Sapienza and Sezione Roma1 INFN, Piazzale Moro 2, 00185 Roma, Italy.
Abstract:
We use the results of ultraprecise cold-atom-recoil experiments to constrain the form of the energy-momentum dispersion relation, a structure that is expected to be modified in several quantum-gravity approaches. Our strategy of analysis applies to the nonrelativistic (small speeds) limit of the dispersion relation, and is therefore complementary to an analogous ongoing effort of investigation of the dispersion relation in the ultrarelativistic regime using observations in astrophysics. For the leading correction in the nonrelativistic limit the exceptional sensitivity of cold-atom-recoil experiments remarkably allows us to set a limit within a single order of magnitude of the desired Planck-scale level, thereby providing the first example of Planck-scale sensitivity in the study of the dispersion relation in controlled laboratory experiments.
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