{
  "annotation_id": "61bb752b-a30c-4238-a6cc-3da7c5281d67",
  "date_created": "2026-03-02T18:00:07.624000Z",
  "date_modified": "2026-03-02T18:00:07.624000Z",
  "file_hash": "a2442ee7d468beffe8386484f14952a2a5238b75d03117a46cecaff715edfdd8",
  "private": false,
  "record": {
    "abstract": "The application of the nonperturbative renormalisation group approach to a\nsystem with two fermion species is studied. Assuming a simple ansatz for the\neffective action with effective bosons, describing pairing effects we derive a\nset of approximate flow equations for the effective coupling including boson\nand fermionic fluctuations. The case of two fermions with different masses but\ncoinciding Fermi surfaces is considered.\n  The phase transition to a phase with broken symmetry is found at a critical\nvalue of the running scale. The large mass difference is found to disfavour the\nformation of pairs.\n  The mean-field results are recovered if the effects of boson loops are\nomitted. While the boson fluctuation effects were found to be negligible for\nlarge values of $p_{F} a$ they become increasingly important with decreasing\n$p_{F} a$ thus making the mean field description less accurate.",
    "arxiv_id": "nucl-th/0605071",
    "authors": [
      "Boris Krippa"
    ],
    "categories": [
      "nucl-th",
      "cond-mat.supr-con",
      "hep-ph"
    ],
    "doi": "10.1016/j.physletb.2006.10.045",
    "journal_ref": "Phys.Lett.B643:104-108,2006",
    "title": "Cold asymmetrical fermion superfluids in nonperturbative renormalisation   group",
    "url": "https://arxiv.org/abs/nucl-th/0605071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a0e957b7-cc4b-4a80-ab71-645523249094",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}