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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We investigate two aspects of conformal field theories. In the first part, westudy the general 4-point correlator of identical scalars around the fullycrossing symmetric point $u=v=1$, where $u,v$ are conformally invariant crossratios. Since this point is fully crossing invariant, we can deduce somegeneral properties of the 4-point correlators from crossing symmetry. In thesecond part, we discuss the conformal bootstrap with OPE truncations. As ageneralization of Gliozzi's method, we propose to extract the low-lying CFTdata by minimizing the "error" induced by an OPE truncation. The error function$\eta$ measures the violation of crossing symmetry. The geometricinterpretation of $\eta$ is the length of the vector associated with thetruncated OPE. As an example, we apply the error-minimization method to the 2dIsing CFT with severely truncated OPEs.

New method for the conformal bootstrap with OPE truncations