On the neutron orbital angular momentum: Has it actually been demonstrated?

• URL: http://arxiv.org/abs/2309.03594v1
• Date: Thu, 7 Sep 2023 09:39:57 GMT
• Title: On the neutron orbital angular momentum: Has it actually been demonstrated?
• Authors: Wolfgang Treimer and Frank Hau{\ss}er and Martin Suda
• Abstract summary: We show that the interpretation of [1] having detected a n-OAM is incorrect for several serious reasons and point out inconsistencies. There was no need to assume an additional n-OAM because no additional effect was observed that could not be explained by standard theory.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In a Nature LETTER [1], a control of neutron angular momentum was apparently demonstrated using a neutron crystal interferometer. In the meantime, a number of highly interesting articles have been published dealing with the n-OAM and neutron interferometry, citing [1]. We show that the interpretation of [1] having detected a n-OAM is incorrect for several serious reasons and point out inconsistencies. Based only on the theory of dynamical neutron diffraction, we calculate all the interferograms and show perfect agreement with those given in [1]. There was no need to assume an additional n-OAM because no additional effect was observed that could not be explained by standard theory.

Related papers

• Measuring the Evolution of Entanglement in Compton Scattering [101.11630543545151]
  The behavior of quantum entanglement during scattering is identical to the behavior of initially classically correlated photons up to a constant factor equal to two. Our dedicated experiment with photons confirms these results and explains the "Puzzle of Decoherence" observed recently.
  arXiv  Detail & Related papers  (2024-06-20T14:21:23Z)
• Separating a particle's mass from its momentum [0.0]
  The counterintuitive result has been obtained that a neutron is measured to be in one place without its spin, and its spin is measured to be in another place without the neutron. A generalization of this effect is presented with a massive particle whose mass is measured to be in one place with no momentum, while the momentum is measured to be in another place without the mass.
  arXiv  Detail & Related papers  (2024-01-18T22:35:01Z)
• Ultracold Neutrons in the Low Curvature Limit: Remarks on the post-Newtonian effects [49.1574468325115]
  We apply a perturbative scheme to derive the non-relativistic Schr"odinger equation in curved spacetime. We calculate the next-to-leading order corrections to the neutron's energy spectrum. While the current precision for observations of ultracold neutrons may not yet enable to probe them, they could still be relevant in the future or in alternative circumstances.
  arXiv  Detail & Related papers  (2023-12-30T16:45:56Z)
• Violation of a Leggett-Garg inequality using ideal negative measurements in neutron interferometry [0.0]
  The measured value of K = 1.120 +/- 0.007, obtained in a neutron interferometric experiment, is clearly above the limit K = 1 predicted by macro-realistic theories.
  arXiv  Detail & Related papers  (2023-07-10T08:17:49Z)
• Entanglement of annihilation photons [141.5628276096321]
  We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Despite numerous measurements, there is still no experimental proof of the entanglement of photons.
  arXiv  Detail & Related papers  (2022-10-14T08:21:55Z)
• Predicting leptonic CP violation via minimization of neutrino entanglement [68.8204255655161]
  We find a theoretical prediction consistent with either no CP-violation or a very small presence of it. We show how a minimization principle of quantum entanglement between the oscillating flavors of a neutrino leads to a unique prediction for the CP-violation phase in the neutrino sector without assuming extra symmetries in the Standard Model.
  arXiv  Detail & Related papers  (2022-07-07T13:59:55Z)
• Detecting Entanglement Between Modes of Light [0.0]
  We consider a subgroup of unitary transformations on a mode of light induced by a Mach-Zehnder Interferometer. We show which local settings of the interferometers lead to a maximal violation of the CHSH inequality.
  arXiv  Detail & Related papers  (2022-01-17T07:24:49Z)
• Symmetry allows for distinguishability in totally destructive many-particle interference [52.77024349608834]
  We investigate, in a four photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a $J_x$ unitary. We show that totally destructive interference does not require mutual indistinguishability between all, but only between symmetrically paired particles.
  arXiv  Detail & Related papers  (2021-02-19T16:37:19Z)
• Direct experimental test of commutation relation via weak value [0.0]
  We present a novel scheme to test the canonical commutation relation between two dichotomic observables. The imaginary part of a suitably formulated weak value enables this direct test. Experiment is realized using a newly developed technique in our neutron interferometric setup.
  arXiv  Detail & Related papers  (2020-12-15T09:42:28Z)
• Maximum refractive index of an atomic medium [58.720142291102135]
  All optical materials with a positive refractive index have a value of index that is of order unity. Despite the giant response of an isolated atom, we find that the maximum index does not indefinitely grow with increasing density. We propose an explanation based upon strong-disorder renormalization group theory.
  arXiv  Detail & Related papers  (2020-06-02T14:57:36Z)
• Do neutrons disagree with photons about where they have been inside an interferometer? [0.0]
  In spite of claims to the contrary, it is argued that all experiments support the same surprising picture according to which the location of the particles inside the interferometers is not described by continuous trajectories.
  arXiv  Detail & Related papers  (2020-05-16T15:43:29Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.