@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00909168v2> a dcat:Dataset ;
    dct:description """
              We study the Bogoliubov-Dirac-Fock (BDF) model, a no-photon, mean-field approxi- mation of quantum electrodynamics that allows to study relativistic electrons interacting with the vacuum. It is a variational model in which states are represented by Hilbert- Schmidt operators. We prove a charge renormalisation formula that holds close to the non-relativistic limit: the density of a ground state is shown to be integrable although such a state is known not to be trace-class. We prove that we can take the non-relativistic limit by keeping track of the vacuum polarisation. We get an altered Hartree-Fock model due to the screening effect.
            """ ;
    dct:identifier "hal-00909168" ;
    dct:issued "2026-05-05T11:14:13.761748"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-05T11:14:13.761753"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Charge renormalisation in a mean-field approximation of QED" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00909168v2/resource/a1d23a4b-2a31-4289-9107-38871dfe75b3> ;
    dcat:keyword "bogoliubov-dirc-fock-model",
        "charge-renormalisation",
        "dirac-operator",
        "ground-states",
        "infoeu-reposemanticspreprint",
        "mathmath-mpmathematics-mathmathematical-physics-math-ph",
        "msc2010-26d15-47j20-49j40",
        "preprints-working-papers-" ;
    dcat:landingPage <https://hal.science/hal-00909168> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00909168v2/resource/a1d23a4b-2a31-4289-9107-38871dfe75b3> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-05T11:14:13.763830"^^xsd:dateTime ;
    dct:modified "2026-05-05T11:14:13.752857"^^xsd:dateTime ;
    dct:title "Charge renormalisation in a mean-field approximation of QED" ;
    dcat:accessURL <https://hal.science/hal-00909168> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://hal.science/hal-00909168> a foaf:Document .