Article Dans Une Revue Annalen der Physik Année : 2014

Exact ground state of strongly correlated electron systems from symmetry-entangled wave-functions

Résumé

The four-site Hubbard model is considered from the exact diagonalisation and variational method points of view. It is shown that the exact ground-state can be recovered by a symmetry projected Slater determinant, irrespective of the interaction strength. This is in contrast to the Gutzwiller wave-function, which is calculated as well.

Dates et versions

in2p3-01109338 , version 1 (26-01-2015)

Identifiants

Citer

A. Leprevost, O. Juillet, R. Fresard. Exact ground state of strongly correlated electron systems from symmetry-entangled wave-functions. Annalen der Physik, 2014, 526 (9-10), pp.430-436. ⟨10.1002/andp.201400129⟩. ⟨in2p3-01109338⟩
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