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- W3037770522 endingPage "2249" @default.
- W3037770522 startingPage "2199" @default.
- W3037770522 abstract "In this work, we argue that the $alpha'to 0$ limit of closed string theory scattering amplitudes is a tropical limit. The motivation is to develop a technology to systematize the extraction of Feynman graphs from string theory amplitudes at higher genus. An important technical input from tropical geometry is the use of tropical theta functions with characteristics to rigorously derive the worldline limit of the worldsheet propagator. This enables us to perform a non-trivial computation at two loops: we derive the tropical form of the integrand of the genus-two four-graviton type II string amplitude, which matches the direct field theory computations. At the mathematical level, this limit is an implementation of the correspondence between the moduli space of Riemann surfaces and the tropical moduli space." @default.
- W3037770522 created "2020-07-02" @default.
- W3037770522 creator A5001755063 @default.
- W3037770522 date "2017-02-25" @default.
- W3037770522 modified "2023-10-06" @default.
- W3037770522 title "Tropical Amplitudes" @default.
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