Nonperturbative approach to the Hubbard model in C60 cluster

Details Nonperturbative approach to the Hubbard model in C60 cluster Nonperturbative approach to the Hubbard model in C60 cluster

1995-06-27

arxiv.org/abs/cond-mat/9506120v2

Physics

Condensed Matter

5 pages, Revtex, 2 figures

Scientific paper

10.1103/PhysRevB.53.11729

We propose a computational scheme for the Hubbard model in the C60 cluster in which the interaction with the Fermi sea of charges added to the neutral molecule is switched on sequentially. This is applied to the calculation of the balance of charging energies, within a low-energy truncation of the space of states which produces moderate errors for an intermediate range of the interaction strength.

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