We give upper and lower bounds fur the ground-state energy of the infinite-U Hubbard model. In two dimensions, using these bounds we are able to rule out the possibility of phase separation between the undoped-insulating stare and a hole-rich state
The fermionic and bosonic sectors of the 2-site Hubbard model have been exactly solved by means of t...
We describe a new approach to the ground state antiferromagnetic phase of the infinite-dimensional H...
We consider the repulsive Hubbard model on a class of lattices or graphs for which there i...
4noWe give upper and lower bounds fur the ground-state energy of the infinite-U Hubbard model. In tw...
We present simple lower bounds on the ground-state energy of the two-dimensional (2D) Hubbard and t-...
The infinite-U Hubbard model with two holes on a two-dimensional square lattice is explicitly studie...
We derive an upper bound on the ground state energy of the three-dimensional (3D) repulsive Hubbard ...
We present the first exact results of the ground-state energy in the two-dimensional Hubbard model o...
Based on a generalization of the equation which solves exactly the two-electron problem, we have fou...
Several resonating-valence-bond-type states are being considered as an approximation of the two-hole...
asymptotically exact solution for the ground state of any finite number n of electrons in the low-de...
We discuss the exact plaquette-ordered ground states of the generalized Hubbard model on the Kagomé ...
The fermionic and bosonic sectors of the 2-site Hubbard model have been exactly solved by means of t...
We investigate the stability with respect to phase separation or charge-density-wave formation of th...
The local density of states is calculated for the Hubbard model in the limit of infinite dimensions....
The fermionic and bosonic sectors of the 2-site Hubbard model have been exactly solved by means of t...
We describe a new approach to the ground state antiferromagnetic phase of the infinite-dimensional H...
We consider the repulsive Hubbard model on a class of lattices or graphs for which there i...
4noWe give upper and lower bounds fur the ground-state energy of the infinite-U Hubbard model. In tw...
We present simple lower bounds on the ground-state energy of the two-dimensional (2D) Hubbard and t-...
The infinite-U Hubbard model with two holes on a two-dimensional square lattice is explicitly studie...
We derive an upper bound on the ground state energy of the three-dimensional (3D) repulsive Hubbard ...
We present the first exact results of the ground-state energy in the two-dimensional Hubbard model o...
Based on a generalization of the equation which solves exactly the two-electron problem, we have fou...
Several resonating-valence-bond-type states are being considered as an approximation of the two-hole...
asymptotically exact solution for the ground state of any finite number n of electrons in the low-de...
We discuss the exact plaquette-ordered ground states of the generalized Hubbard model on the Kagomé ...
The fermionic and bosonic sectors of the 2-site Hubbard model have been exactly solved by means of t...
We investigate the stability with respect to phase separation or charge-density-wave formation of th...
The local density of states is calculated for the Hubbard model in the limit of infinite dimensions....
The fermionic and bosonic sectors of the 2-site Hubbard model have been exactly solved by means of t...
We describe a new approach to the ground state antiferromagnetic phase of the infinite-dimensional H...
We consider the repulsive Hubbard model on a class of lattices or graphs for which there i...
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