A minimal observable length is a common feature of theories that aim to merge quantum physics and gravity. Quantum mechanically, this concept is associated with a nonzero minimal uncertainty in position measurements, which is encoded in deformed commutation relations. In spite of increasing theoretical interest, the subject suffers from the complete lack of dedicated experiments and bounds to the deformation parameters have just been extrapolated from indirect measurements. As recently proposed, low-energy mechanical oscillators could allow to reveal the effect of a modified commutator. Here we analyze the free evolution of high-quality factor micro-and nano-oscillators, spanning a wide range of masses around the Planck mass m(P) (approximate to 22 mu g). The direct check against a model of deformed dynamics substantially lowers the previous limits on the parameters quantifying the commutator deformation.

Probing deformed commutators with macroscopic harmonic oscillators / Bawaj, Mateusz; Biancofiore, Ciro; Bonaldi, Michele; Bonfigli, Federica; Borrielli, Antonio; Di Giuseppe, Giovanni; Marconi, Lorenzo; Marino, Francesco; Natali, Riccardo; Pontin, Antonio; Prodi, Giovanni Andrea; Serra, Enrico; Vitali, David; Marin, Francesco. - In: NATURE COMMUNICATIONS. - ISSN 2041-1723. - 6:(2015), p. 7503. [10.1038/ncomms8503]

Probing deformed commutators with macroscopic harmonic oscillators

Prodi, Giovanni Andrea;Serra, Enrico;
2015-01-01

Abstract

A minimal observable length is a common feature of theories that aim to merge quantum physics and gravity. Quantum mechanically, this concept is associated with a nonzero minimal uncertainty in position measurements, which is encoded in deformed commutation relations. In spite of increasing theoretical interest, the subject suffers from the complete lack of dedicated experiments and bounds to the deformation parameters have just been extrapolated from indirect measurements. As recently proposed, low-energy mechanical oscillators could allow to reveal the effect of a modified commutator. Here we analyze the free evolution of high-quality factor micro-and nano-oscillators, spanning a wide range of masses around the Planck mass m(P) (approximate to 22 mu g). The direct check against a model of deformed dynamics substantially lowers the previous limits on the parameters quantifying the commutator deformation.
2015
Bawaj, Mateusz; Biancofiore, Ciro; Bonaldi, Michele; Bonfigli, Federica; Borrielli, Antonio; Di Giuseppe, Giovanni; Marconi, Lorenzo; Marino, Francesco; Natali, Riccardo; Pontin, Antonio; Prodi, Giovanni Andrea; Serra, Enrico; Vitali, David; Marin, Francesco
Probing deformed commutators with macroscopic harmonic oscillators / Bawaj, Mateusz; Biancofiore, Ciro; Bonaldi, Michele; Bonfigli, Federica; Borrielli, Antonio; Di Giuseppe, Giovanni; Marconi, Lorenzo; Marino, Francesco; Natali, Riccardo; Pontin, Antonio; Prodi, Giovanni Andrea; Serra, Enrico; Vitali, David; Marin, Francesco. - In: NATURE COMMUNICATIONS. - ISSN 2041-1723. - 6:(2015), p. 7503. [10.1038/ncomms8503]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/141888
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