Dynamic Hubbard models

Dynamic Hubbard models are extensions of the conventional Hubbard model that describe essential physics of correlated electrons not described by the conventional Hubbard model. In particular, they recognize the essential physical fact that holes are not like electrons.

The following papers describe recent work on dynamic Hubbard models:

Dynamic Hubbard Model , Phys. Rev. Lett. 87, 206402 (2001).
Why holes are not like electrons: A microscopic analysis of the differences between holes and electrons in condensed matter , Phys.Rev. B 65, 184502 (2002), cond-mat/0109385 (2001).
Quantum Monte Carlo and exact diagonalization study of a dynamic Hubbard model , cond-mat/0201005 (2002), Phys.Rev. B65, 214510 (2002).
Quasiparticle undressing in a dynamic Hubbard model: exact diagonalization study , cond-mat/0205006 (2002), Phys.Rev. B66, 064507 (2002).
Electronic dynamic Hubbard model: exact diagonalization study , cond-mat/0207369 (2002), Phys.Rev. B67, 035103 (2003).
Dynamic Hubbard Model: Effect of Finite Boson Frequency , F. Marsiglio, R. Teshima, JEH, cond-mat/0307594 (2003).

The following talk explains the justification and some properties of dynamic Hubbard models

For more information see web pages on hole superconductivity and on superconductivity from undressing