Appariement et mouvement collectif dans des systèmes à N corps fermioniques : gaz d'atomes froids et étoiles à neutrons

Abstract : This treatise is a collection of introductory chapters and published articles on pairing and superfluidity in various fermionic many-body systems: trapped atomic gases, nuclear matter, neutron star crust, droplets of quark matter ("strangelets"). After a general introduction, emphasizing the analogies between these different systems, pairing in static systems is discussed: Bogoliubov-de Gennes (Hartree-Fock-Bogoliubov) equations for finite systems, Nozières-Schmitt-Rink approach for the BEC-BCS cross-over. Then the collective motion of superfluid systems is studied: slow rotation (without vortex) and collective modes. This is done in the framework of the following methods: superfluid hydrodynamics, quasiparticle random-phase approximation (QRPA), and semiclassical theories (quasiparticle transport theory by Betbeder-Matibet and Nozières, Boltzmann equation). Finally, perspectives and future projects are discussed.
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Habilitation à diriger des recherches
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https://tel.archives-ouvertes.fr/tel-00674944
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Submitted on : Tuesday, February 28, 2012 - 3:15:33 PM
Last modification on : Thursday, September 5, 2019 - 1:17:23 AM
Long-term archiving on: Friday, November 23, 2012 - 3:15:10 PM

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Michael Urban. Appariement et mouvement collectif dans des systèmes à N corps fermioniques : gaz d'atomes froids et étoiles à neutrons. Physique Nucléaire Théorique [nucl-th]. Université Paris Sud - Paris XI, 2012. ⟨tel-00674944⟩

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