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 calculate the beta-functions for an open string sigma-model in thepresence of a U(1) background. Passing to N=2 boundary superspace, in which thebackground is fully characterized by a scalar potential, significantlyfacilitates the calculation. Performing the calculation through three loopsyields the equations of motion up to five derivatives on the fieldstrengths,which upon integration gives the bosonic sector of the effective action for asingle D-brane in trivial bulk background fields through four derivatives andto all orders in alpha'. Finally, the present calculation shows that demandingultra-violet finiteness of the non-linear sigma-model can be reformulated asthe requirement that the background is a deformed stable holomorphic U(1)bundle.Comment: 25 pages, numerous figure

Derivative corrections to the Born-Infeld action through beta-function calculations in N=2 ``boundary'' superspace