Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-02-14
Physics
Condensed Matter
Strongly Correlated Electrons
11 pages, no figures. Complete revision of the paper with many changes
Scientific paper
We consider the repulsive Hubbard model on a class of lattices or graphs for which there is a large degeneracy of the single particle ground states and where the projector onto the space of single particle ground states is highly reducible. This means that one can find a basis in the space of the single particle ground states such that the support of each single particle ground state belongs to some small cluster and these clusters do not overlap. We show how such lattices can be constructed in arbitrary dimensions. We construct all multi-particle ground states of these models for electron numbers not larger than the number of localized single particle eigenstates. We derive some of the ground state properties, esp. the residual entropy, i.e. the finite entropy density at zero temperature.
No associations
LandOfFree
Properties of Hubbard models with degenerate localized single particle eigenstates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Properties of Hubbard models with degenerate localized single particle eigenstates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Properties of Hubbard models with degenerate localized single particle eigenstates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-555974