Trionic phase of ultracold fermions in an optical lattice: A variational study

Simple item page
dc.creatorRapp, Akos
dc.creatorHofstetter, Walter
dc.creatorZarand, Gergely
dc.date2007-07-16
dc.date2008-04-24
dc.date.accessioned2026-07-07T09:34:08Z
dc.date.available2026-07-07T09:34:08Z
dc.descriptionTo investigate ultracold fermionic atoms of three internal states (colors) in an optical lattice, subject to strong attractive interaction, we study the attractive three-color Hubbard model in infinite dimensions by using a variational approach. We find a quantum phase transition between a weak-coupling superconducting phase and a strong-coupling trionic phase where groups of three atoms are bound to a composite fermion. We show how the Gutzwiller variational theory can be reformulated in terms of an effective field theory with three-body interactions and how this effective field theory can be solved exactly in infinite dimensions by using the methods of dynamical mean field theory.
dc.description14 PRB pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0707.2378
dc.identifierhttp://arxiv.org/abs/0707.2378
dc.identifierPhys. Rev. B 77, 144520 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.144520
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/159381
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleTrionic phase of ultracold fermions in an optical lattice: A variational study
dc.typetext

Files

Collections

arXiv