dorsal/arxiv
View SchemaKaon Condensation and Lambda-Nucleon Loop in the Relativistic Mean-Field Approach
| Authors | Tomoyuki Maruyama, Takumi Muto, Toshitaka Tatsumi, Kazuo Tsushima, Anthony W. Thomas |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0502079 |
| URL | https://arxiv.org/abs/nucl-th/0502079 |
| DOI | 10.1016/j.nuclphysa.2005.06.008 |
| Journal | Nucl.Phys.A760:319-345,2005 |
Abstract
The possibility of kaon condensation in high-density symmetric nuclear matter is investigated including both s- and p-wave kaon-baryon interactions within the relativistic mean-field (RMF) theory. Above a certain density, we have a collective ${\bar K}_s$ state carrying the same quantum numbers as the antikaon. The appearance of the ${\bar K}_s$ state is caused by the time component of the axial-vector interaction between kaons and baryons. It is shown that the system becomes unstable with respect to condensation of $K$-${\bar K}_s$ pairs. We consider how the effective baryon masses affect the kaon self-energy coming from the time component of the axial-vector interaction. Also, the role of the spatial component of the axial-vector interaction on the possible existence of the collective kaonic states is discussed in connection with $\Lambda$-mixing effects in the ground state of high-density matter. Implications of $K{\bar K}_s$ condensation for high-energy heavy-ion collisions are briefly mentioned.
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"abstract": "The possibility of kaon condensation in high-density symmetric nuclear matter\nis investigated including both s- and p-wave kaon-baryon interactions within\nthe relativistic mean-field (RMF) theory. Above a certain density, we have a\ncollective ${\\bar K}_s$ state carrying the same quantum numbers as the\nantikaon. The appearance of the ${\\bar K}_s$ state is caused by the time\ncomponent of the axial-vector interaction between kaons and baryons. It is\nshown that the system becomes unstable with respect to condensation of\n$K$-${\\bar K}_s$ pairs. We consider how the effective baryon masses affect the\nkaon self-energy coming from the time component of the axial-vector\ninteraction. Also, the role of the spatial component of the axial-vector\ninteraction on the possible existence of the collective kaonic states is\ndiscussed in connection with $\\Lambda$-mixing effects in the ground state of\nhigh-density matter. Implications of $K{\\bar K}_s$ condensation for high-energy\nheavy-ion collisions are briefly mentioned.",
"arxiv_id": "nucl-th/0502079",
"authors": [
"Tomoyuki Maruyama",
"Takumi Muto",
"Toshitaka Tatsumi",
"Kazuo Tsushima",
"Anthony W. Thomas"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/j.nuclphysa.2005.06.008",
"journal_ref": "Nucl.Phys.A760:319-345,2005",
"title": "Kaon Condensation and Lambda-Nucleon Loop in the Relativistic Mean-Field Approach",
"url": "https://arxiv.org/abs/nucl-th/0502079"
},
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