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 give a complete classification of T6/[Z(2)xZ(2M)xOmegaR] orientifolds onfactorisable tori and rigid D6-branes on them. The analysis includes thesupersymmetry, RR tadpole cancellation and K-theory conditions and completemassless open and closed string spectrum (i.e. non-chiral as well as chiral)for fractional or rigid D6-branes for all inequivalent compactificationlattices, without and with discrete torsion. We give examples for each orbifoldbackground, which show that on Z(2)xZ(6) and Z(2)xZ(6') there exist completelyrigid D6-branes despite the self-intersections of orbifold image cycles. Thisopens up a new avenue for improved Standard Model building. On the other hand,we show that Standard and GUT model building on the Z(2)xZ(4) background isruled out by simple arguments.

Rigid D6-branes on T6/[Z(2)xZ(2M)xOmegaR] with discrete torsion