On observation of neutron quantum states in Earth gravitational field at Laue-Langevin Institute, Grenoble

Abstract

The experiment performed with ultra-cold neutrons at the Laue-Langevin Institute, Grenoble, is analyzed in view of the claim that ``neutron quantum states in Earth gravitational field'' are observed. Our conclusion is that the above claim is neither theoretically nor experimentally substantiated. We also criticize the statement that ``observation of the gravitationally bound quantum states of neutrons and the related experimental techniques provide a unique tool for a broad range of investigations in fundamental physics of particles and fields''.

arXiv comment26 pages, 5 figures

References in corpus (13)

• Sub-millimeter Tests of the Gravitational Inverse-square Law
• Measurement of quantum states of neutrons in the Earth's gravitational field
• Study of the neutron quantum states in the gravity field
• Search for axion-like particles using a variable baseline photon regeneration technique
• Non-dispersive wave packets in periodically driven quantum systems
• Constrains on non-Newtonian gravity from the experiment on neutron quantum states in the Earth's gravitational field
• Quantum motion of a neutron in a wave-guide in the gravitational field
• Gravitational quantum states of neutrons in a rough waveguide
• Expectation value analysis of wave packet solutions for the quantum bouncer: short-term classical and long-term revival behavior
• Simple examples of position-momentum correlated Gaussian free-particle wavepackets in one-dimension with the general form of the time-dependent spread in position
• Exact results for `bouncing' Gaussian wave packets
• The Nystrom plus Correction Method for Solving Bound State Equations in Momentum Space
• The quantum potential: the breakdown of classical symplectic symmetry and the energy of localisation and dispersion