PIRSA:15040176

# Explicit multiloop amplitude computations with the pure spinor formalism

### APA

Mafra, C. (2015). Explicit multiloop amplitude computations with the pure spinor formalism. Perimeter Institute. https://pirsa.org/15040176

### MLA

Mafra, Carlos. Explicit multiloop amplitude computations with the pure spinor formalism. Perimeter Institute, Apr. 24, 2015, https://pirsa.org/15040176

### BibTex

```          @misc{ pirsa_15040176,
doi = {10.48660/15040176},
url = {https://pirsa.org/15040176},
author = {Mafra, Carlos},
keywords = {Quantum Fields and Strings},
language = {en},
title = {Explicit multiloop amplitude computations with the pure spinor formalism},
publisher = {Perimeter Institute},
year = {2015},
month = {apr},
note = {PIRSA:15040176 see, \url{https://pirsa.org}}
}
```

Carlo Mafra University of Cambridge

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Talk Type
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## Abstract

In this talk I will show how to use the pure spinor formalism to compute multiloop string amplitudes, including their precise overall coefficients. I will also discuss the relevance of the recent four-point 3-loop and five-point 2-loop amplitudes for verifying some S-duality predictions.