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7 papers · 1 filter
Deriving CSW rules for massive scalar legs and pure Yang-Mills loops
Rutger Boels, Christian Schwinn
This article provides two complementary detailed derivations of Cachazo-Svrcek-Witten-style Feynman rules for Yang-Mills gauge theory coupled to a massive coloured scalar as presen…
CSW rules for massive matter legs and glue loops
Rutger Boels, Christian Schwinn
Cachazo-Svrcek-Witten-type Feynman rules for massive matter scalar legs and pure glue loops are presented, obtained by deriving them directly from the space-time action. We comment…
CSW rules for a massive scalar
Rutger Boels, Christian Schwinn
We derive the analog of the Cachazo-Svrcek-Witten (CSW) diagrammatic Feynman rules for four dimensional Yang-Mills gauge theory coupled to a massive colored scalar. The mass term i…
Fixed points of quantum gravity in higher dimensions
Peter Fischer, Daniel F. Litim
We study quantum gravity in more than four dimensions by means of an exact functional flow. A non-trivial ultraviolet fixed point is found in the Einstein-Hilbert theory. It is sho…
Nonperturbative sum over topologies in 2D Lorentzian quantum gravity
R. Loll, W. Westra, S. Zohren
The recent progress in the Causal Dynamical Triangulations (CDT) approach to quantum gravity indicates that gravitation is nonperturbatively renormalizable. We review some of the l…
SUSY Ward identities for multi-gluon helicity amplitudes with massive quarks
Christian Schwinn, Stefan Weinzierl
We use supersymmetric Ward identities to relate multi-gluon helicity amplitudes involving a pair of massive quarks to amplitudes with massive scalars. This allows to use the recent…