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 present a numerical linear programming bootstrap to construct dual modelscattering amplitudes. Dual models describe tree-level exchanges of higher spinresonances in theories like string theory and large $N$ gauge theories. Despitebeing very simple objects, their numerical bootstrap has proven challenging dueto slow convergence of the infinite sums over resonances. Our bootstrapsucceeds thanks to an efficient parametrization of the amplitude in terms ofMandelstam-Regge poles and the use of combined regions that make crossingsymmetry constraining. Along the way, we discover and conjecture a property of``super-unitarity'' of the Veneziano amplitude, which we use to keep a linearproblem.  As results, we present first the study of a class of string-like amplitudeswith linear trajectories, for which we observe that the Veneziano amplitudelies at a preferred location, at the bottom of a pit, which minimizes crossing.Then, we introduce a toy-model deformation to non-linear trajectories,mimicking some features of QCD, for which our algorithm also detects a clearpit. This gives compelling evidence that our bootstrap is able to produceamplitudes that can exhibit non-trivial phenomenological features.

The Regge bootstrap, from linear to non-linear trajectories