Tree-Level N-Point Amplitudes in String Theory
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
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
string theory, pure spinors, pure spinor formalism, amplitudes, N-point, BRST
IdentifiersURN: urn:nbn:se:uu:diva-296369OAI: oai:DiVA.org:uu-296369DiVA: diva2:937707
Master Programme in Physics
2016-06-10, Å73121, Lägerhyddsvägen 1, Uppsala, 21:08 (English)
Minahan, Joseph, Prof.
Korn, Andreas, Dr.