{
  "annotation_id": "2963c6e2-02e4-46bd-9518-b0b6f2d629cb",
  "date_created": "2026-03-02T18:00:03.933000Z",
  "date_modified": "2026-03-02T18:00:03.933000Z",
  "file_hash": "289faad770ead7b3c3b4e101f66a0954810c0605a4b43ae8dec78f4566f746c4",
  "private": false,
  "record": {
    "abstract": "The density dependent relativistic hadron field theory(DDRH) is extended to\ninclusions of pentaquark $\\Theta^+$. We investigate In-medium properties of\n$\\Theta^+$ and nucleons. As well as the neutron and proton,the effective\n$\\Theta^+$ mass decreases as the baryon density increases,and remains larger\nthan nucleons\u0027. The effective mass of $\\Theta^+$ is\ncalculated,$M^*_{\\Theta^+}\\simeq0.71M_{\\Theta^+}$ at normal nuclear density\nwith the fraction of $\\Theta^+$ 0.2. The effective masses of all baryon\nincrease with the increasing fraction of $\\Theta^+$. The binding energy is also\nstudied. We find the binding energy is much larger than it in nuclear matter\nwithout $\\Theta^+$,and then discuss the stability of the system with\nconclusions of pentaquark $\\Theta^+$. It is shown that the system becomes\nbounder added small fraction of $\\Theta^+$. Finally we discuss the condition\nwhen the system is the most stable and calculate the minimum of binding energy\nand the fractions of all baryons as functions of baryon density.",
    "arxiv_id": "nucl-th/0502010",
    "authors": [
      "Xi-Guo Lee",
      "Yuan Gao"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Density dependent relativistic hadron theory for hadron matter with   inclusion of pentaquark $\\Theta^+$",
    "url": "https://arxiv.org/abs/nucl-th/0502010"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ac72d9ae-b227-486a-a117-907f26d5efe9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}