Sökning: "bcj"
Hittade 2 uppsatser innehållade ordet bcj.
1. Cubic Representations of Open-String Effective Action Contact Terms and BCJ Relations at Four-Point One-Loop
Master-uppsats, Uppsala universitet/Teoretisk fysikSammanfattning : The tree amplitudes of string theory low-energy effective actions admit a diagrammatic expansion in terms of higher-than-cubic contact terms. These tree amplitudes can be used to build loop amplitudes using unitary cuts or the forward limit. LÄS MER
2. Browsing the Web of Amplitudes
Master-uppsats, Uppsala universitet/Teoretisk fysikSammanfattning : We begin by studying field-theory amplitude relations such as the Kleiss-Kuijf, Bern-Carrasco-Johansson, Kawai-Lewellen-Tye and the double copy construction, which are important ingredients in this thesis. Going beyond the field-theory limit we study how the gauge-sector of the heterotic string relates to type I amplitudes through the single valued projection of multiple zeta values. LÄS MER