English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We propose an effective model called the "charge model", for the half-filledone-dimensional Hubbard and extended Hubbard models. In this model, spin-chargeseparation, which has been justified from an infinite on-site repulsion ($U$)in the strict sense, is compatible with charge fluctuations. Our analyses basedon the many-body Wannier functions succeeded in determining the opticalconductivity spectra in large systems. The obtained spectra reproduce thespectra for the original models well even in the intermediate $U$ region of$U=5-10T$, with $T$ being the nearest-neighbor electron hopping energy. Theseresults indicate that the spin-charge separation works fairly well in thisintermediate $U$ region against the usual expectation and that the charge modelis an effective model that applies to actual quasi-one-dimensional materialsclassified as strongly correlated electron systems.

physical review. b./physical review. b

A charge model as an effective model of one-dimensional Hubbard and  extended Hubbard systems: its application to linear optical spectrum  calculations in large systems based upon many-body Wannier functions