62 citations · 455 across the 37 of their papers we have counts for
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Exact ground states for the four-electron problem in a two-dimensional finite Hubbard square system
Endre Kovacs, Zsolt Gulacsi
We present exact explicit analytical results describing the exact ground state of four electrons in a two dimensional square Hubbard cluster containing 16 sites taken with periodic…
Exact ground states for the four-electron problem in a Hubbard ladder
Endre Kovacs, Zsolt Gulacsi
The exact ground state of four electrons in an arbitrary large two leg Hubbard ladder is deduced from nine analytic and explicit linear equations. The used procedure is described,…
Four electrons in a two-leg Hubbard ladder: exact ground states
Endre Kovacs, Zsolt Gulacsi
In the case of a two-leg Hubbard ladder we present a procedure which allows the exact deduction of the ground state for the four particle problem in arbitrary large lattice system,…
Exact stripe, checkerboard, and droplet ground states in two dimensions
Zsolt Gulacsi, Miklos Gulacsi
Exact static nondegenerate stripe and checkerboard ground states are obtained in a two-dimensional generalized periodic Anderson model, for a broad concentration range below quarte…