dorsal/arxiv
View SchemaGauge dependence of calculations in relativistic Coulomb excitation
| Authors | B. F. Bayman, F. Zardi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0410112 |
| URL | https://arxiv.org/abs/nucl-th/0410112 |
| DOI | 10.1103/PhysRevC.71.014904 |
| Journal | Phys.Rev. C71 (2005) 014904 |
Abstract
Before a quantum-mechanical calculation involving electromagnetic interactions is performed, a choice must be made of the gauge to be used in expressing the potentials. If the calculation is done exactly, the observable results it predicts will be independent of the choice of gauge. However, in most practical calculations approximations are made, which can destroy the gauge invariance of the predictions. We compare here the results of coupled-channel time-dependent relativistic Coulomb excitation calculations, as performed in either Lorentz or Coulomb gauges. We find significant differences when the bombarding energy per nucleon is $\geq$ 2 GeV, which indicates that the common practice of relying completely on the Lorentz gauge can be dangerous.
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"abstract": "Before a quantum-mechanical calculation involving electromagnetic\ninteractions is performed, a choice must be made of the gauge to be used in\nexpressing the potentials. If the calculation is done exactly, the observable\nresults it predicts will be independent of the choice of gauge. However, in\nmost practical calculations approximations are made, which can destroy the\ngauge invariance of the predictions. We compare here the results of\ncoupled-channel time-dependent relativistic Coulomb excitation calculations, as\nperformed in either Lorentz or Coulomb gauges. We find significant differences\nwhen the bombarding energy per nucleon is $\\geq$ 2 GeV, which indicates that\nthe common practice of relying completely on the Lorentz gauge can be\ndangerous.",
"arxiv_id": "nucl-th/0410112",
"authors": [
"B. F. Bayman",
"F. Zardi"
],
"categories": [
"nucl-th"
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"doi": "10.1103/PhysRevC.71.014904",
"journal_ref": "Phys.Rev. C71 (2005) 014904",
"title": "Gauge dependence of calculations in relativistic Coulomb excitation",
"url": "https://arxiv.org/abs/nucl-th/0410112"
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