205 citations · 3k across the 122 of their papers we have counts for
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hep-th1999★ 55 cited
Conformal Field Theory and the Exact Solution of the BCS Hamiltonian
German Sierra
We propose a connection between conformal field theory (CFT) and the exact solution and integrability of the reduced BCS model of superconductivity. The relevant CFT is given by th…
cond-mat1999
The Recurrent Variational Approach applied to the Electronic Structure of Conjugated Polymers
S. Pleutin, E. Jeckelmann, M. A. Martin-Delgado +1
In this note, first the Recurrent Variational Approach (RVA) is introduced by using as example a non-trivial spin-model, the spin-1/2 antiferromagnetic two-leg-ladder. Then, a firs…
cond-mat.str-el1999★ 8 cited
Recurrent Variational Approach to the Two-Leg Hubbard Ladder
Eugene H. Kim, German Sierra, Daniel Duffy
We applied the Recurrent Variational Approach to the two-leg Hubbard ladder. At half-filling, our variational Ansatz was a generalization of the resonating valence bond state. At f…