dorsal/arxiv
View SchemaMagnetic Properties of Scalar Particles --The Scalar Aharonov-Casher Effect and Supersymmetry
| Authors | Xiao-Gang He, Bruce H. McKellar |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0208005 |
| URL | https://arxiv.org/abs/quant-ph/0208005 |
| DOI | 10.1016/S0370-2693(03)00245-4 |
| Journal | Phys.Lett.B559:263-269,2003 |
Abstract
The original topological Aharonov-Casher (AC) effect is due to the interaction of the anomalous magnetic dipole moment (MDM) with certain configurations of electric field. Naively one would not expect an AC effect for a scalar particle for which no anomalous MDM can be defined in the usual sense. In this letter we study the AC effect in supersymmetric systems. In this framework there is the possibility of deducing the AC effect of a scalar particle from the corresponding effect for a spinor particle. In 3+1 dimensions such a connection is not possible because the anomalous MDM is zero if supersymmetry is an exact symmetry. However, in 2+1 dimensions it is possible to have an anomalous MDM even with exact supersymmetry. Having demonstrated the relationship between the spinor and the scalar MDM, we proceed to show that the scalar AC effect is uniquely defined. We then compute the anomalous MDM at the one loop level, showing how the scalar form arises in 2+1 dimensions from the coupling of the scalar to spinors. This model shows how an AC effect for a scalar can be generated for non-supersymmetric theories, and we construct such a model to illustrate the mechanism.
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"abstract": "The original topological Aharonov-Casher (AC) effect is due to the\ninteraction of the anomalous magnetic dipole moment (MDM) with certain\nconfigurations of electric field. Naively one would not expect an AC effect for\na scalar particle for which no anomalous MDM can be defined in the usual sense.\nIn this letter we study the AC effect in supersymmetric systems. In this\nframework there is the possibility of deducing the AC effect of a scalar\nparticle from the corresponding effect for a spinor particle. In 3+1 dimensions\nsuch a connection is not possible because the anomalous MDM is zero if\nsupersymmetry is an exact symmetry. However, in 2+1 dimensions it is possible\nto have an anomalous MDM even with exact supersymmetry.\n Having demonstrated the relationship between the spinor and the scalar MDM,\nwe proceed to show that the scalar AC effect is uniquely defined. We then\ncompute the anomalous MDM at the one loop level, showing how the scalar form\narises in 2+1 dimensions from the coupling of the scalar to spinors. This model\nshows how an AC effect for a scalar can be generated for non-supersymmetric\ntheories, and we construct such a model to illustrate the mechanism.",
"arxiv_id": "quant-ph/0208005",
"authors": [
"Xiao-Gang He",
"Bruce H. McKellar"
],
"categories": [
"quant-ph",
"hep-ph",
"hep-th"
],
"doi": "10.1016/S0370-2693(03)00245-4",
"journal_ref": "Phys.Lett.B559:263-269,2003",
"title": "Magnetic Properties of Scalar Particles --The Scalar Aharonov-Casher Effect and Supersymmetry",
"url": "https://arxiv.org/abs/quant-ph/0208005"
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