dorsal/arxiv
View SchemaNucleon-nucleon effective potential in dense matter including rho-meson exchange
| Authors | L. Mornas, E. Gallego, A. Perez |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9806093 |
| URL | https://arxiv.org/abs/nucl-th/9806093 |
Abstract
We obtain the RPA summed one-meson exchange potential between nucleons in symmetric nuclear matter at zero temperature, from a model which includes $\rho $, $\sigma $, $\omega $ and $\pi $ mesons. The behavior of rho mesons inside the medium is first discussed using different schemes to extract a finite contribution from the vacuum polarization. These schemes give qualitatively different results for the in-medium rho mass. The results are discussed in connection with the non-renormalizability of the model. We next study the modified potential as density increases. In the intermediate distance range, it is qualitatively modified by matter and vacuum effects. In the long-distance range ($r>2$ fm), one observes the presence of oscillations, which are not present in free-space. Features on this distance range are insensitive to the renormalization scheme.
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"abstract": "We obtain the RPA summed one-meson exchange potential between nucleons in\nsymmetric nuclear matter at zero temperature, from a model which includes $\\rho\n$, $\\sigma $, $\\omega $ and $\\pi $ mesons. The behavior of rho mesons inside\nthe medium is first discussed using different schemes to extract a finite\ncontribution from the vacuum polarization. These schemes give qualitatively\ndifferent results for the in-medium rho mass. The results are discussed in\nconnection with the non-renormalizability of the model. We next study the\nmodified potential as density increases. In the intermediate distance range, it\nis qualitatively modified by matter and vacuum effects. In the long-distance\nrange ($r\u003e2$ fm), one observes the presence of oscillations, which are not\npresent in free-space. Features on this distance range are insensitive to the\nrenormalization scheme.",
"arxiv_id": "nucl-th/9806093",
"authors": [
"L. Mornas",
"E. Gallego",
"A. Perez"
],
"categories": [
"nucl-th"
],
"title": "Nucleon-nucleon effective potential in dense matter including rho-meson exchange",
"url": "https://arxiv.org/abs/nucl-th/9806093"
},
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