Testing quantum gravity induced nonlocality via optomechanical quantum oscillators

Year: 2016

Authors: Belenchia A., Benincasa D.M.T., Liberati S., Marin F., Marino F., Ortolan A.

Autors Affiliation: SISSA, Via Bonomea 265, Trieste I-34136, Italy;
INFN, Sez. di Trieste, Via Velerio 2, Trieste 34127 Italy; Dipartimento di Fisica e Astronomia, University of Florence and INFN, Sezione di Firenze, Via Sansone, 1, I-50019 Sesto Fiorentino, Firenze, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino, Firenze, Italy; CNR-Istituto Nazionale di Ottica, Largo E. Fermi 6, I-50125 Firenze, Italy;
INFN, Laboratori Nazionali di Legnaro, Viale dell’Università, 2, 35020 Legnaro, Padova, Italy

Abstract: Several quantum gravity scenarios lead to physics below the Planck scale characterized by nonlocal, Lorentz invariant equations of motion. We show that such nonlocal effective field theories lead to a modified Schrodinger evolution in the nonrelativistic limit. In particular, the nonlocal evolution of optomechanical quantum oscillators is characterized by a spontaneous periodic squeezing that cannot be generated by environmental effects. We discuss constraints on the nonlocality obtained by past experiments, and show how future experiments (already under construction) will either see such effects or otherwise cast severe bounds on the nonlocality scale (well beyond the current limits set by the Large Hadron Collider). This paves the way for table top, high precision experiments on massive quantum objects as a promising new avenue for testing some quantum gravity phenomenology.


Volume: 116 (16)      Pages from: 161303-1  to: 161303-5

More Information: A. B., D. M. T. B., and S. L. wish to acknowledge the John Templeton Foundation for Supporting Grant No. 51876. A. B. also acknowledges the support of the STSM Grant from the COST Action MP1006 and would like to thank F. Dowker and Imperial College for interesting discussions and hospitality during early stages of this work. The authors also thank S. Hossenfelder for useful comments on the Letter.
DOI: 10.1103/PhysRevLett.116.161303

Citations: 34
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