{
  "id": "2112.12539",
  "version": "v2",
  "published": "2021-12-23T13:46:10.000Z",
  "updated": "2022-07-04T10:29:04.000Z",
  "title": "Bose-Einstein condensation in finite drops of alpha particles",
  "authors": [
    "L. M. Satarov",
    "I. N. Mishustin",
    "H. Stoecker"
  ],
  "comment": "24 pages, 9 figures",
  "categories": [
    "nucl-th"
  ],
  "abstract": "Ground-state properties of finite drops of alpha particles (Q-balls) are studied within a field-theoretical approach in the mean-field approximation. The strong interaction of alphas is described by the scalar field with a sextic Skyrme-like potential. The radial profiles of scalar- and Coulomb fields are found by solving the coupled system of Klein-Gordon and Poisson equations. The formation of shell-like nuclei, with vanishing density around the center, is predicted at high enough attractive strength of Skyrme potential. The equilibrium values of energy and baryon number of Q-balls and Q-shells are calculated for different sets of interaction parameters. Empirical binding energies of alpha-conjugate nuclei are reproduced only if the gradient term in the Lagrangian is strongly enhanced. It is demonstrated that this enhancement can be explained by a finite size of alpha particles.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2022-07-04T10:29:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "alpha particles",
      "finite drops",
      "bose-einstein condensation",
      "mean-field approximation",
      "strong interaction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}