352 citations · 5.8k across the 155 of their papers we have counts for
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math-ph2006★ 13 cited
Ground state energy of the low density Hubbard model. An upper bound
Alessandro Giuliani
We derive an upper bound on the ground state energy of the three-dimensional (3D) repulsive Hubbard model on the cubic lattice agreeing in the low density limit with the known asym…
math-ph2006★ 20 cited
Borel summability and Lindstedt series
O. Costin, G. Gallavotti, G. Gentile +1
Resonant motions of integrable systems subject to perturbations may continue to exist and to cover surfaces with parametric equations admitting a formal power expansion in the stre…