dorsal/arxiv
View SchemaHot Nuclear Matter Equation of State with a Three-body Force
| Authors | W. Zuo, Z. H. Li, A. Li, G. C. Lu |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0412100 |
| URL | https://arxiv.org/abs/nucl-th/0412100 |
| DOI | 10.1103/PhysRevC.69.064001 |
| Journal | Phys.Rev.C69:064001,2004 |
Abstract
The finite temperature Brueckner-Hartree-Fock approach is extended by introducing a microscopic three-body force. In the framework of the extended model, the equation of state of hot asymmetric nuclear matter and its isospin dependence have been investigated. The critical temperature of liquid-gas phase transition for symmetric nuclear matter has been calculated and compared with other predictions. It turns out that the three-body force gives a repulsive contribution to the equation of state which is stronger at higher density and as a consequence reduces the critical temperature of liquid-gas phase transition. The calculated energy per nucleon of hot asymmetric nuclear matter is shown to satisfy a simple quadratic dependence on asymmetric parameter $\beta$ as in the zero-temperature case. The symmetry energy and its density dependence have been obtained and discussed. Our results show that the three-body force affects strongly the high-density behavior of the symmetry energy and makes the symmetry energy more sensitive to the variation of temperature. The temperature dependence and the isospin dependence of other physical quantities, such as the proton and neutron single particle potentials and effective masses are also studied. Due to the additional repulsion produced by the three-body force contribution, the proton and neutron single particle potentials are correspondingly enhanced as similar to the zero-temperature case.
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"abstract": "The finite temperature Brueckner-Hartree-Fock approach is extended by\nintroducing a microscopic three-body force. In the framework of the extended\nmodel, the equation of state of hot asymmetric nuclear matter and its isospin\ndependence have been investigated. The critical temperature of liquid-gas phase\ntransition for symmetric nuclear matter has been calculated and compared with\nother predictions. It turns out that the three-body force gives a repulsive\ncontribution to the equation of state which is stronger at higher density and\nas a consequence reduces the critical temperature of liquid-gas phase\ntransition. The calculated energy per nucleon of hot asymmetric nuclear matter\nis shown to satisfy a simple quadratic dependence on asymmetric parameter\n$\\beta$ as in the zero-temperature case. The symmetry energy and its density\ndependence have been obtained and discussed. Our results show that the\nthree-body force affects strongly the high-density behavior of the symmetry\nenergy and makes the symmetry energy more sensitive to the variation of\ntemperature. The temperature dependence and the isospin dependence of other\nphysical quantities, such as the proton and neutron single particle potentials\nand effective masses are also studied. Due to the additional repulsion produced\nby the three-body force contribution, the proton and neutron single particle\npotentials are correspondingly enhanced as similar to the zero-temperature\ncase.",
"arxiv_id": "nucl-th/0412100",
"authors": [
"W. Zuo",
"Z. H. Li",
"A. Li",
"G. C. Lu"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.69.064001",
"journal_ref": "Phys.Rev.C69:064001,2004",
"title": "Hot Nuclear Matter Equation of State with a Three-body Force",
"url": "https://arxiv.org/abs/nucl-th/0412100"
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