dorsal/arxiv
View SchemaTopology, Locality, and Aharonov-Bohm Effect with Neutrons
| Authors | Murray Peshkin, H. J. Lipkin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9501012 |
| URL | https://arxiv.org/abs/quant-ph/9501012 |
| DOI | 10.1103/PhysRevLett.74.2847 |
| Journal | Phys.Rev.Lett. 74 (1995) 2847-2850 |
Abstract
Recent neutron interferometry experiments have been interpreted as demonstrating a new topological phenomenon similar in principle to the usual Aharonov-Bohm (AB) effect, but with the neutron's magnetic moment replacing the electron's charge. We show that the new phenomenon, called Scalar AB (SAB) effect, follows from an ordinary local interaction, contrary to the usual AB effect, and we argue that the SAB effect is not a topological effect by any useful definition. We find that SAB actually measures an apparently novel spin autocorrelation whose operator equations of motion contain the local torque in the magnetic field. We note that the same remarks apply to the Aharonov-Casher effect.
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"abstract": "Recent neutron interferometry experiments have been interpreted as\ndemonstrating a new topological phenomenon similar in principle to the usual\nAharonov-Bohm (AB) effect, but with the neutron\u0027s magnetic moment replacing the\nelectron\u0027s charge. We show that the new phenomenon, called Scalar AB (SAB)\neffect, follows from an ordinary local interaction, contrary to the usual AB\neffect, and we argue that the SAB effect is not a topological effect by any\nuseful definition. We find that SAB actually measures an apparently novel spin\nautocorrelation whose operator equations of motion contain the local torque in\nthe magnetic field. We note that the same remarks apply to the Aharonov-Casher\neffect.",
"arxiv_id": "quant-ph/9501012",
"authors": [
"Murray Peshkin",
"H. J. Lipkin"
],
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"quant-ph",
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],
"doi": "10.1103/PhysRevLett.74.2847",
"journal_ref": "Phys.Rev.Lett. 74 (1995) 2847-2850",
"title": "Topology, Locality, and Aharonov-Bohm Effect with Neutrons",
"url": "https://arxiv.org/abs/quant-ph/9501012"
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