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Conference papers
Exact ground state of strongly correlated electron systems from symmetry-restored wave-functions
Abstract : The four site Hubbard model is considered from the exact diagonalization and variational method points of view. We show that a symmetry projected mean-field theory recovers the exact ground state energy, irrespective of the interaction strength, in contrast to the conventional Gutzwiller wave-function that will be also considered.
http://hal.in2p3.fr/in2p3-01073840
Contributor : Sandrine Guesnon <>
Submitted on : Friday, October 10, 2014 - 3:12:32 PM
Last modification on : Tuesday, February 5, 2019 - 12:12:09 PM
Contributor : Sandrine Guesnon <>
Submitted on : Friday, October 10, 2014 - 3:12:32 PM
Last modification on : Tuesday, February 5, 2019 - 12:12:09 PM