Finite-Size Bosonization and Self-Consistent Harmonic Approximation

Details Finite-Size Bosonization and Self-Consistent Harmonic Approximation Finite-Size Bosonization and Self-Consistent Harmonic Approximation

2004-08-11

arxiv.org/abs/cond-mat/0408235v1

J. Phys.: Condens. Matter 16 (2004) 6445-6451

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1088/0953-8984/16/36/010

The self-consistent harmonic approximation is extended in order to account for the existence of Klein factors in bosonized Hamiltonians. This is important for the study of finite systems where Klein factors cannot be ignored a priori. As a test we apply the method to interacting spinless fermions with modulated hopping. We calculate the finite-size corrections to the energy gap and the Drude weight and compare our results with the exact solution for special values of the model parameters.

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