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 evaluate the vacuum expectation value of the central charge operator instring theory in an AdS3 vacuum. Our calculation provides a rare non-zeroone-point function on a spherical worldsheet. The evaluation involves theregularization both of a worldsheet ultraviolet divergence (associated to theinfinite volume of the conformal Killing group), and a space-time infrareddivergence (corresponding to the infinite volume of space-time). The twodivergences conspire to give a finite result, which is the classical generalrelativity value for the central charge, corrected in bosonic string theory byan infinite series of tree level higher derivative terms.

The AdS3 central charge in string theory