One-loop four-graviton string amplitude at finite $\alpha'$
We evaluate the one-loop four-graviton scattering amplitude in type-II superstring theory exactly in $\alpha'$. This result is achieved by combining physical insights into the $i\varepsilon$ prescription in string theory with a new technical application of the Rademacher expansion of modular integra...
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
SciPost
2026-02-01
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| Col·lecció: | SciPost Physics |
| Accés en línia: | https://scipost.org/SciPostPhys.20.2.052 |
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