dorsal/arxiv
View SchemaTwo-Loop Calculations with Vertex Corrections in the Walecka Model
| Authors | Brian D. Serot, Huabin Tang |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9404023 |
| URL | https://arxiv.org/abs/nucl-th/9404023 |
| DOI | 10.1103/PhysRevC.51.969 |
| Journal | Phys.Rev.C51:969-986,1995 |
Abstract
Two-loop corrections with scalar and vector form factors are calculated for nuclear matter in the Walecka model. The on-shell form factors are derived from vertex corrections within the framework of the model and are highly damped at large spacelike momenta. The two-loop corrections are evaluated first by using the one-loop parameters and mean fields and then by refitting the total energy/baryon to empirical nuclear matter saturation properties. The modified two-loop corrections are significantly smaller than those computed with bare vertices. Contributions from the anomalous isoscalar form factor of the nucleon are included for the first time. The effects of the implicit density dependence of the form factors, which arise from the shift in the baryon mass, are also considered. Finally, necessary extensions of these calculations are discussed.
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"abstract": "Two-loop corrections with scalar and vector form factors are calculated for\nnuclear matter in the Walecka model. The on-shell form factors are derived from\nvertex corrections within the framework of the model and are highly damped at\nlarge spacelike momenta. The two-loop corrections are evaluated first by using\nthe one-loop parameters and mean fields and then by refitting the total\nenergy/baryon to empirical nuclear matter saturation properties. The modified\ntwo-loop corrections are significantly smaller than those computed with bare\nvertices. Contributions from the anomalous isoscalar form factor of the nucleon\nare included for the first time. The effects of the implicit density dependence\nof the form factors, which arise from the shift in the baryon mass, are also\nconsidered. Finally, necessary extensions of these calculations are discussed.",
"arxiv_id": "nucl-th/9404023",
"authors": [
"Brian D. Serot",
"Huabin Tang"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.51.969",
"journal_ref": "Phys.Rev.C51:969-986,1995",
"title": "Two-Loop Calculations with Vertex Corrections in the Walecka Model",
"url": "https://arxiv.org/abs/nucl-th/9404023"
},
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