The Recurrent Variational Approach applied to the Electronic Structure of Conjugated Polymers

S. Pleutin; E. Jeckelmann; M. A. Martin-Delgado; G. Sierra

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The Recurrent Variational Approach applied to the Electronic Structure of Conjugated Polymers

S. Pleutin·E. Jeckelmann·M. A. Martin-Delgado·G. Sierra

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Abstract

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 first application of this scheme to the electronic structure of conjugated polymers is proposed. An analogy between the two-leg ladder and the dimerized chain described by the Extended Peierls-Hubbard Hamiltonian is underlined and comparisons are made with DMRG calculations. The proposed ansatz is useful to get some analytical insight and it is a good starting point for further improvements using the RVA.

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S. Pleutin, E. Jeckelmann, M. A. Martin-Delgado, G. Sierra. 1999-08-11. The Recurrent Variational Approach applied to the Electronic Structure of Conjugated Polymers. https://arxiv.org/abs/cond-mat/9908062

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