SciPost Submission Page
Lorentzian contours for tree-level string amplitudes
by Lorenz Eberhardt, Sebastian Mizera
Submission summary
| Authors (as registered SciPost users): | Sebastian Mizera |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2403.07051v1 (pdf) |
| Date submitted: | 2024-03-17 20:49 |
| Submitted by: | Mizera, Sebastian |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
We engineer compact contours on the moduli spaces of genus-zero Riemann surfaces that achieve analytic continuation from Euclidean to Lorentzian worldsheets. These generalized Pochhammer contours are based on the combinatorics of associahedra and make the analytic properties of tree-level amplitudes entirely manifest for any number and type of external strings. We use them in practice to perform first numerical computations of open and closed string amplitudes directly in the physical kinematics for $n=4,5,6,7,8,9$. We provide a code that allows anyone to do such computations.
Current status:
In refereeing