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, I-34136 Trieste, Italy; Ist Nazl Fis Nucl, Sez Trieste, Via Velerio 2, I-34127 Trieste, Italy; Univ Florence, Dipartimento Fis & Astron, Via Sansone 1, I-50019 Florence, Italy; Ist Nazl Fis Nucl, Sez Firenze, Via Sansone 1, I-50019 Florence, Italy; LENS, Via Carrara 1, I-50019 Florence, Italy; Ist Nazl Ottica, CNR, Largo E Fermi 6, I-50125 Florence, Italy; Ist Nazl Fis Nucl, Lab Nazl Legnaro, Viale Univ 2, I-35020 Padua, 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.

Journal/Review: PHYSICAL REVIEW LETTERS

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.
KeyWords: mechanical resonator; ground-state; motion
DOI: 10.1103/PhysRevLett.116.161303

Citations: 44
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