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

Non‐geometric frames in string theory are related to the geometric ones by certain local O(D,D) transformations, the so‐called β‐transforms. For each such transformation, we show that there exists both a natural field redefinition of the metric and the Kalb‐Ramond two‐form as well as an associated Lie algebroid. We furthermore prove that the all‐order low‐energy effective action of the superstring, written in terms of the redefined fields, can be expressed through differential‐geometric objects of the corresponding Lie algebroid. Thus, the latter provides a natural framework for effective superstring actions in non‐geometric frames. Relations of this new formalism to double field theory and to the description of non‐geometric backgrounds such as T‐folds are discussed as well.

The intriguing structure of non‐geometric frames in string theory