Show simple item record

dc.contributor.authorSok, Jérémy
dc.date.accessioned2014-05-16T10:58:05Z
dc.date.available2014-05-16T10:58:05Z
dc.date.issued2014
dc.identifier.urihttps://basepub.dauphine.fr/handle/123456789/13305
dc.language.isoenen
dc.subjectground statesen
dc.subjectcharge renormalisationen
dc.subjectBogoliubov-Dirc-Fock modelen
dc.subjectDirac operatoren
dc.subject.ddc520en
dc.titleCharge renormalisation in a mean-field approximation of QEDen
dc.typeDocument de travail / Working paper
dc.description.abstractenWe 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.en
dc.publisher.nameUniversité Paris-Dauphineen
dc.publisher.cityParisen
dc.identifier.citationpages43en
dc.identifier.urlsitehttp://hal.archives-ouvertes.fr/hal-00909168en
dc.subject.ddclabelSciences connexes (physique, astrophysique)en
dc.description.submittednonen


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record