SU(2) slave-rotor theory of the attractive Hubbard model

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dc.creatorKim, Ki-Seok
dc.date2005-11-22
dc.date2006-07-11
dc.date.accessioned2026-07-07T06:49:20Z
dc.date.available2026-07-07T06:49:20Z
dc.descriptionExtending the U(1) slave-rotor representation\cite{FG_SRR} of the repulsive Hubbard model, we propose an SU(2) slave-rotor decomposition for the attractive Hubbard model, where the SU(2) slave-rotor variables represent order parameter fluctuations associated with superconductivity and charge density wave. This decomposition method allows us to modify the standard Hartree-Fock mean field theory by incorporating order parameter fluctuations on an equal footing. Deriving an effective SU(2) slave-rotor action from the attractive Hubbard model, and analyzing it at the mean field level, we demonstrate a second order phase transition driven by softening of the slave-rotor variables.
dc.identifierhttps://arxiv.org/abs/cond-mat/0511527
dc.identifierhttp://arxiv.org/abs/cond-mat/0511527
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/104306
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleSU(2) slave-rotor theory of the attractive Hubbard model
dc.typetext

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