dorsal/arxiv
View SchemaChiral condensates and size of the sigma term
| Authors | G. X. Peng |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0412105 |
| URL | https://arxiv.org/abs/nucl-th/0412105 |
| DOI | 10.1016/j.nuclphysa.2004.09.058 |
| Journal | Nucl.Phys. A747 (2005) 75-83 |
Abstract
The in-medium chiral condensate is studied with a new approach which has the advantage of no need for extra assumptions on the current mass derivatives of model parameters. It is shown that the pion-nucleon sigma term is 9/2 times the average current mass of light quarks, if quark confinement is linear. Considering both perturbative and non-perturbative interactions, the chiral condensate decreases monotonously with increasing densities, approaching to zero at about 4 fm^{-3}.
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"abstract": "The in-medium chiral condensate is studied with a new approach which has the\nadvantage of no need for extra assumptions on the current mass derivatives of\nmodel parameters. It is shown that the pion-nucleon sigma term is 9/2 times the\naverage current mass of light quarks, if quark confinement is linear.\nConsidering both perturbative and non-perturbative interactions, the chiral\ncondensate decreases monotonously with increasing densities, approaching to\nzero at about 4 fm^{-3}.",
"arxiv_id": "nucl-th/0412105",
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"G. X. Peng"
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"doi": "10.1016/j.nuclphysa.2004.09.058",
"journal_ref": "Nucl.Phys. A747 (2005) 75-83",
"title": "Chiral condensates and size of the sigma term",
"url": "https://arxiv.org/abs/nucl-th/0412105"
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