dorsal/arxiv
View SchemaOn the Analytic Structure of the Quark Self-Energy in Nambu-Jona- Lasinio Models
| Authors | P. P. Domitrovich, H. Müther |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9308019 |
| URL | https://arxiv.org/abs/nucl-th/9308019 |
| DOI | 10.1088/0954-3899/20/12/005 |
| Journal | J.Phys. G20 (1994) 1885-1900 |
Abstract
The self-energy of quarks is investigated for various models which are inspired by the Nambu--Jona-Lasinio (NJL) model. Including, beyond the Hartree-Fock approximation, terms up to second-order in the quark interaction, the real and imaginary parts of scalar and vector components of the self-energy are discussed. The second-order contributions depend on the energy and momentum of the quark under consideration. This leads to solutions of the Dirac equation which are significantly different from those of a free quark or a quark with constant effective mass, as obtained in the Hartree-Fock approximation.
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"abstract": "The self-energy of quarks is investigated for various models which are\ninspired by the Nambu--Jona-Lasinio (NJL) model. Including, beyond the\nHartree-Fock approximation, terms up to second-order in the quark interaction,\nthe real and imaginary parts of scalar and vector components of the self-energy\nare discussed. The second-order contributions depend on the energy and momentum\nof the quark under consideration. This leads to solutions of the Dirac equation\nwhich are significantly different from those of a free quark or a quark with\nconstant effective mass, as obtained in the Hartree-Fock approximation.",
"arxiv_id": "nucl-th/9308019",
"authors": [
"P. P. Domitrovich",
"H. M\u00fcther"
],
"categories": [
"nucl-th"
],
"doi": "10.1088/0954-3899/20/12/005",
"journal_ref": "J.Phys. G20 (1994) 1885-1900",
"title": "On the Analytic Structure of the Quark Self-Energy in Nambu-Jona- Lasinio Models",
"url": "https://arxiv.org/abs/nucl-th/9308019"
},
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