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/

Zendy Plus

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

Zendy Tools

Zendy Open

We find a fine structure in the Aharonov-Bohm effect, characterized by theappearence of a new type of periodic oscillations having smaller fractionalperiod and an amplitude, which may compare with the amplitude of theconventional Aharonov-Bohm effect. Specifically, at low density or strongcoupling on a Hubbard ring can coexist along with the conventional Aaronov-Bohmoscillations with the period equal to an integer, measured in units of theelementary flux quantum, two additional oscillations with periods $1/N$ and$M/N$. The integers $N$ and $M$ are the particles number and the number ofdown-spin particles, respectively. {}From a solution of the Bethe ansatzequations for $N$ electrons located on a ring in a magnetic field we show thatthe fine structure is due to electron-electron and Zeeman interactions. Ourresults are valid in the dilute density limit and for an arbitrary value of theHubbard repulsion $U$Comment: 40 pages (Latex,Revtex) 12 figures by request, in Technical Reports  of ISSP , Ser. A, No.2836 (1994

Fine structure and fractionalM/NAharonov-Bohm effect