A note on density correlations in the half-filled Hubbard model

Abstract

We consider density-density correlations in the one-dimensional Hubbard model at half filling. On intuitive grounds one might expect them to exhibit an exponential decay. However, as has been noted recently, this is not obvious from the Bethe Ansatz/conformal field theory (BA/CFT) approach. We show that by supplementing the BA/CFT analysis with simple symmetry arguments one can easily prove that correlations of the lattice density operators decay exponentially.

3 pages, RevTeX

References in corpus (2)

• Metal-insulator transition in the one-dimensional SU(N) Hubbard model
• Classification and Stability of Phases of the Multicomponent One-Dimensional Electron Gas

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• Mobile impurity approach to the optical conductivity in the Hubbard chain
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• Effective Hamiltonian for a Half-filled Hubbard Chain with Alternating On-site Interactions
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