Unitarity cuts of the worldsheet
We compute the imaginary parts of genus-one string scattering amplitudes. Following Witten's $i\varepsilon$ prescription for the integration contour on the moduli space of worldsheets, we give a general algorithm for computing unitarity cuts of the annulus, Möbius strip, and torus topologies e...
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| Format: | Article |
| Language: | English |
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SciPost
2023-02-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.14.2.015 |