{
  "id": "nucl-th/0012023",
  "version": "v2",
  "published": "2000-12-06T17:34:57.000Z",
  "updated": "2000-12-08T17:24:33.000Z",
  "title": "Diquarks and Density",
  "authors": [
    "M. B. Hecht",
    "C. D. Roberts",
    "S. M. Schmidt"
  ],
  "comment": "16 pages, LaTeX2e, Contribution to the Proceedings of \"Physics of Neutron Star Interiors,\" a workshop at ECT$\\ast$, Trento, Italy, June-July/2000, Eds. D. Blaschke, N.K. Glendenning and A. Sedrakian. No changes",
  "journal": "Lect.Notes Phys.578:218-234,2001",
  "categories": [
    "nucl-th",
    "hep-lat",
    "hep-ph"
  ],
  "abstract": "We describe aspects of the role that diquark correlations play in understanding baryon structure and interactions. The significance of diquarks in that application motivates a study of the possibility that dense hadronic matter may exhibit diquark condensation; i.e., quark-quark pairing promoted by a quark chemical potential. A Gorkov-Nambu-like gap equation is introduced for QCD and analysed for 2-colour QCD (QC2D) and, in two qualitatively different truncations, for QCD itself. Among other interesting features, we illustrate that QC2D with massive fermions undergoes a second-order transition to a superfluid phase when the chemical potential exceeds 0.5 m.pi. In the QCD application we illustrate that the sigma= <bar-q q> .neq. 0 phase, which determines the properties of the mass spectrum at zero temperature and chemical potential, is unstable with respect to the superfluid phase when the chemical potential exceeds approx. 2 sigma, and that at this point the diquark gap is large, approx. 0.5 sigma. The superfluid phase survives to temperatures greater than that expected in the core of compact stars.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2000-12-08T17:24:33.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dense hadronic matter",
      "diquark correlations play",
      "superfluid phase survives",
      "chemical potential exceeds approx",
      "compact stars"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 538143
    }
  }
}