Göttingen 2012 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 22: Quantenfeldtheorie
T 22.2: Vortrag
Mittwoch, 29. Februar 2012, 17:00–17:15, VG 3.101
Color guided amplitudes — •Johannes Brödel1 and Lance J. Dixon2 — 1Stanford Institute for Theoretical Physics and Department of Physics, Stanford University, Stanford, CA 94305, USA — 2SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, USA
Amplitudes in gauge thoeries obtain contributions from color and kinematics. While these two parts of the amplitude seem to exhibit different symmetry structures, it turns out that they can be reorganized in a way to behave equally, which leads to the so-called color-kinematic dual representations of amplitudes. Astonishingly, the existence of those representations allows squaring to related gravitational theories right away. Contrary to the Kawaii-Levellen-Tye relations, which have been used to relate gauge theories and gravity previously, this method is applicable not only to tree amplitudes but also at loop level.
In this talk, the basic technique will be introduced followed by a discussion of the existence of color-kinematic dual representations for amplitudes derived from gauge theory actions which are deformed by higher-operator insertions. In addition, it will be commented on the implications for deformed gravitational theories.