dorsal/arxiv
View SchemaExact 4He Spectral Function in a Semirealistic NN Potential Model
| Authors | V. D. Efros, W. Leidemann, G. Orlandini |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9805002 |
| URL | https://arxiv.org/abs/nucl-th/9805002 |
| DOI | 10.1103/PhysRevC.58.582 |
| Journal | Phys.Rev.C58:582-585,1998 |
Abstract
The spectral function of 4He is calculated with the Lorentz integral transform method in a large energy and momentum range. The excitation spectrum of the residual 3N-system is fully taken into account. The obtained spectral function is used to calculate the quasi elastic longitudinal (e,e') response R_l of 4He for q=300, 400, and 500 MeV/c. Comparison with the exact R_l shows a rather sizeable disagreement except in the quasi elastic peak, where the differences reduce to about 10% at q=500 MeV/c. It is shown as well that very simple momentum distribution approximations for the spectral function provide practically the same results for R_l as the exact spectral function.
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"abstract": "The spectral function of 4He is calculated with the Lorentz integral\ntransform method in a large energy and momentum range. The excitation spectrum\nof the residual 3N-system is fully taken into account. The obtained spectral\nfunction is used to calculate the quasi elastic longitudinal (e,e\u0027) response\nR_l of 4He for q=300, 400, and 500 MeV/c. Comparison with the exact R_l shows a\nrather sizeable disagreement except in the quasi elastic peak, where the\ndifferences reduce to about 10% at q=500 MeV/c. It is shown as well that very\nsimple momentum distribution approximations for the spectral function provide\npractically the same results for R_l as the exact spectral function.",
"arxiv_id": "nucl-th/9805002",
"authors": [
"V. D. Efros",
"W. Leidemann",
"G. Orlandini"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.58.582",
"journal_ref": "Phys.Rev.C58:582-585,1998",
"title": "Exact 4He Spectral Function in a Semirealistic NN Potential Model",
"url": "https://arxiv.org/abs/nucl-th/9805002"
},
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