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Tree-Level N-Point Amplitudes in String Theory
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis reviews the method of Mafra, Schlotterer, and Stieberger (2011) for computing the full colour ordered N-point open superstring amplitude using the Pure Spinor formalism. We introduce relevant elements of super Yang-Mills theory and examine the basics of the Pure Spinor formalism, with a focus on tools for amplitude computation. We then define a series of objects with increasingly useful BRST transformation properties, which greatly simplify the calculations, and show how these properties can be determined using a diagrammatic method. Finally, we use the explicit four- and five-point amplitude computations as stepping stones to compute the general N-point amplitude, which factors into a set of kinematic integrals multiplying SYM subamplitudes.

Place, publisher, year, edition, pages
Keyword [en]
string theory, pure spinors, pure spinor formalism, amplitudes, N-point, BRST
National Category
Subatomic Physics
URN: urn:nbn:se:uu:diva-296369OAI: diva2:937707
Educational program
Master Programme in Physics
2016-06-10, Å73121, Lägerhyddsvägen 1, Uppsala, 21:08 (English)
Available from: 2016-06-17 Created: 2016-06-15 Last updated: 2016-06-17Bibliographically approved

Open Access in DiVA

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