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    Experimental test of noncommutative quantum gravity by VIP-2 Lead

    Kristian Piscicchia2,3, Andrea Addazi1,3,*, Antonino Marcianò4,3,†, Massimiliano Bazzi3, Michael Cargnelli5,3, Alberto Clozza3, Luca De Paolis3, Raffaele Del Grande6,3, Carlo Guaraldo3 et al.

    Mihail Antoniu Iliescu3, Matthias Laubenstein7, Johann Marton5,3, Marco Miliucci3, Fabrizio Napolitano3, Alessio Porcelli5,3, Alessandro Scordo3, Diana Laura Sirghi3,8, Florin Sirghi3,8, Oton Vazquez Doce3, Johann Zmeskal5,3, and Catalina Curceanu3

    • 1Center for Theoretical Physics, College of Physics Science and Technology, Sichuan University, 610065 Chengdu, China
    • 2Centro Ricerche Enrico Fermi—Museo Storico della Fisica Centro Studi e Ricerche “Enrico Fermi”, 00184 Roma, Italy, EU
    • 3Laboratori Nazionali di Frascati INFN, Frascati (Rome), 00044 Italy, EU
    • 4Center for Field Theory and Particle Physics and Department of Physics Fudan University, 200438 Shanghai, China
    • 5Stefan Meyer Institute for subatomic physics, Austrian Academy of Science, 1030 Vienna, Austria, EU
    • 6Physik Department E62, Technische Universität München, 85748 Garching, Germany, EU
    • 7Laboratori Nazionali del Gran Sasso INFN, 67100 Assergi (L’Aquila), Italy, EU
    • 8IFIN-HH, Institutul National pentru Fizica si Inginerie Nucleara Horia Hulubei, 077125 Măgurele, Romania, EU

    • *addazi@scu.edu.cn
    • †marciano@fudan.edu.cn
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    Phys. Rev. D 107, 026002 – Published 4 January, 2023

    DOI: https://doi.org/10.1103/PhysRevD.107.026002

    Abstract

    Pauli exclusion principle (PEP) violations induced by space-time noncommutativity, a class of universality for several models of quantum gravity, are investigated by the VIP-2 Lead experiment at the Gran Sasso underground National Laboratory of INFN. The VIP-2 Lead experimental bound on the noncommutative space-time scale Λ excludes θ-Poincaré far above the Planck scale for non anishing “electriclike” components of θμν, and up to 6.9×10−2 Planck scales if they are null. Therefore, this new bound represents the tightest one so far provided by atomic transitions tests. This result strongly motivates high sensitivity underground x-ray measurements as critical tests of quantum gravity and of the very microscopic space-time structure.

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    Strongest Atomic Physics Bounds on Noncommutative Quantum Gravity Models

    Kristian Piscicchia, Andrea Addazi, Antonino Marcianò, Massimiliano Bazzi, Michael Cargnelli, Alberto Clozza, Luca De Paolis, Raffaele Del Grande, Carlo Guaraldo, Mihail Antoniu Iliescu, Matthias Laubenstein, Johann Marton, Marco Miliucci, Fabrizio Napolitano, Alessio Porcelli, Alessandro Scordo, Diana Laura Sirghi, Florin Sirghi, Oton Vazquez Doce, Johann Zmeskal, and Catalina Curceanu
    Phys. Rev. Lett. 129, 131301 (2022)

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    Phys. Rev. D 107, 026002– Published 4 January, 2023
    • Received 25 March 2022
    • Accepted 7 December 2022
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