Tetrahedral modular graph functions
Abstract The low-energy expansion of one-loop amplitudes in type II string theory generates a series of world-sheet integrals whose integrands can be represented by world-sheet Feynman diagrams. These integrands are modular invariant and understanding the structure of the action of the modular Lapla...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2017-09-01
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Series: | Journal of High Energy Physics |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1007/JHEP09(2017)155 |