@article{ISI:000378540300002,
 abstract = {The conventional viewpoint of the strongly correlated electron
metal-insulator transition is that a single band splits into two upper
and lower Hubbard bands at the transition. Much work has investigated
whether this transition is continuous or discontinuous. Here we focus on
another aspect and ask the question of whether there are additional
upper and lower Hubbard bands, which stretch all the way out to infinity
- leading to an infinite single-particle bandwidth (or spectral range)
for the Mott insulator. While we are not able to provide a rigorous
proof of this result, we use exact diagonalization studies on small
clusters to motivate the existence of these additional bands, and we
discuss some different methods that might be utilized to provide such a
proof. Even though the extra upper and lower Hubbard bands have very low
total spectral weight, those states are expected to have extremely long
lifetimes, leading to a nontrivial contribution to the transport density
of states for dc transport and modifying the high temperature limit for
the electrical resistivity.},
 article-number = {1642001},
 author = {Freericks, J. K. and Cohn, J. R. and van Dongen, P. G. J. and
Krishnamurthy, H. R.},
 doi = {10.1142/S0217979216420017},
 eissn = {1793-6578},
 issn = {0217-9792},
 journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS B},
 month = {MAY 20},
 note = {International Conference on Electron Correlation in Nanostructures
(ECN), Odessa, UKRAINE, SEP 03-06, 2015},
 number = {13, SI},
 orcid-numbers = {Freericks, James K/0000-0002-6232-9165},
 researcherid-numbers = {Freericks, James K/D-7502-2011},
 times-cited = {0},
 title = {Infinite single-particle bandwidth of a Mott-Hubbard insulator},
 unique-id = {ISI:000378540300002},
 volume = {30},
 year = {2016}
}