Time-dependent Gutzwiller approximation for the Hubbard model

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dc.creatorSeibold, G.
dc.creatorLorenzana, J.
dc.date2000-06-27
dc.date.accessioned2026-07-07T09:44:32Z
dc.date.available2026-07-07T09:44:32Z
dc.descriptionWe develop a time-dependent Gutzwiller approximation (GA) for the Hubbard model analogous to the time-dependent Hartree-Fock (HF) method. The formalism incorporates ground state correlations of the random phase approximation (RPA) type beyond the GA. Static quantities like ground state energy and double occupancy are in excellent agreement with exact results in one dimension up to moderate coupling and in two dimensions for all couplings. We find a substantial improvement over traditional GA and HF+RPA treatments. Dynamical correlation functions can be easily computed and are also substantially better than HF+RPA ones and obey well behaved sum rules.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0006416
dc.identifierhttp://arxiv.org/abs/cond-mat/0006416
dc.identifierPhys. Rev. Lett. 86, 2605 (2001)
dc.identifierdoi:10.1103/PhysRevLett.86.2605
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162907
dc.subjectStrongly Correlated Electrons
dc.titleTime-dependent Gutzwiller approximation for the Hubbard model
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