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2013

On the field theory expansion of superstring five point amplitudes

Boels, Rutger H.

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A simple recursive expansion algorithm for the integrals of tree level superstring five point amplitudes in a flat background is given which reduces the expansion to simple symbol(ic) manipulations.

This approach can be used for instance to prove the expansion is maximally transcendental to all orders and to verify several conjectures made in recent literature to high order.
Closed string amplitudes follow from these open string results by the KLT relations.
To obtain insight into these results in particular the maximal R-symmetry violating amplitudes (MRV) in type IIB superstring theory are studied.

On the field theory expansion of superstring five point amplitudes · Around

Built on

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M. B. Green and M. Gutperle, Effects of D instantons
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J. M. Borwein, D. M. Bradley, D. J. Broadhurst, and P. Lisonek, Special values of multiple polylogarithms
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R. Medina, F. T. Brandt, and F. R. Machado, The open superstring 5-point amplitude revisited
2002
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