dorsal/arxiv
View SchemaEffective Nucleon Masses in Symmetric and Asymmetric Nuclear Matter
| Authors | E. N. E. van Dalen, C. Fuchs, Amand Faessler |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0502064 |
| URL | https://arxiv.org/abs/nucl-th/0502064 |
| DOI | 10.1103/PhysRevLett.95.022302 |
| Journal | Phys.Rev.Lett. 95 (2005) 022302 |
Abstract
The momentum and isospin dependence of the in-medium nucleon mass are studied. Two definitions of the effective mass, i.e. the Dirac mass $m^*_D$ and the nonrelativistic mass $m^*_{NR}$ which parameterizes the energy spectrum, are compared. Both masses are determined from relativistic Dirac-Brueckner-Hartree-Fock calculations. The nonrelativistic mass shows a distinct peak around the Fermi momentum. The proton-neutron mass splitting in isospin asymmetric matter is $m^*_{D,n} <m^*_{D,p}$ and opposite for the nonrelativistic mass, i.e. $m^*_{NR,n} >m^*_{NR,p}$, which is consistent with nonrelativistic approaches.
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"abstract": "The momentum and isospin dependence of the in-medium nucleon mass are\nstudied. Two definitions of the effective mass, i.e. the Dirac mass $m^*_D$ and\nthe nonrelativistic mass $m^*_{NR}$ which parameterizes the energy spectrum,\nare compared. Both masses are determined from relativistic\nDirac-Brueckner-Hartree-Fock calculations. The nonrelativistic mass shows a\ndistinct peak around the Fermi momentum. The proton-neutron mass splitting in\nisospin asymmetric matter is $m^*_{D,n} \u003cm^*_{D,p}$ and opposite for the\nnonrelativistic mass, i.e. $m^*_{NR,n} \u003em^*_{NR,p}$, which is consistent with\nnonrelativistic approaches.",
"arxiv_id": "nucl-th/0502064",
"authors": [
"E. N. E. van Dalen",
"C. Fuchs",
"Amand Faessler"
],
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"nucl-th"
],
"doi": "10.1103/PhysRevLett.95.022302",
"journal_ref": "Phys.Rev.Lett. 95 (2005) 022302",
"title": "Effective Nucleon Masses in Symmetric and Asymmetric Nuclear Matter",
"url": "https://arxiv.org/abs/nucl-th/0502064"
},
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