Sökning: "Color-Kinematics"

Hittade 3 uppsatser innehållade ordet Color-Kinematics.

1. 1. Cubic Representations of Open-String Effective Action Contact Terms and BCJ Relations at Four-Point One-Loop

   Master-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Tegevi Micah; [2021]
   Nyckelord :Scattering Amplitudes; Color-Kinematics;

   Sammanfattning : 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

3. 2. The double-copy method for supergravity amplitudes

   Master-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Maor Ben-Shahar; [2019]
   Nyckelord :Supergravity; quantum field theory; counterterm; amplitudes;

   Sammanfattning : The double-copy construction enables the calculation of scattering amplitudes in theories of gravity by combining amplitudes from gauge theories. It relies on obtaining numerators that obey a duality between color and numerator factors, called color-kinematics duality. LÄS MER

4. 3. A Diagrammatic Study of Gauge and Gravity Amplitude Relations

   Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Micah Tegevi; [2018]
   Nyckelord :;

   Sammanfattning : We review modern methods of scattering amplitude computations, beginning with color-decomposition that decomposes the amplitude into a color-dependentand a color-independent part of partial color-ordered amplitudes. We then show how a full amplitude can be described through the color-factor, propagator structure, and kinematic numerator of cubic color-ordered diagrams. LÄS MER