In this work we present two variational approaches to the electron-phonon interaction in strongly correlated systems. The first approach that we discussed focuses mainly on the first aspect of the problem, whereas the second one completed the picture including a faithful description of phonon properties. We tested both in the paramagnetic sector of the Hubbard-Holstein model at T = 0, focusing on ground-state properties of both electrons and phonons.
Variational approaches for electron-phonon interaction in strongly correlated systems
2006
Abstract
In this work we present two variational approaches to the electron-phonon interaction in strongly correlated systems. The first approach that we discussed focuses mainly on the first aspect of the problem, whereas the second one completed the picture including a faithful description of phonon properties. We tested both in the paramagnetic sector of the Hubbard-Holstein model at T = 0, focusing on ground-state properties of both electrons and phonons.File in questo prodotto:
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Utilizza questo identificativo per citare o creare un link a questo documento:
https://hdl.handle.net/20.500.14242/141838
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URN:NBN:IT:UNIROMA3-141838