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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We use coarse index methods to prove that the Landau Hamiltonian on thehyperbolic half-plane, and even on much more general imperfect half-spaces, hasno spectral gaps. Thus the edge states of hyperbolic quantum Hall Hamiltonianscompletely fill up the gaps between Landau levels, just like those of theEuclidean counterpart.

Gaplessness of Landau Hamiltonians on hyperbolic half-planes via coarse geometry