452 citations · 4.6k across the 75 of their papers we have counts for
4 papers · 1 filter
MHV-Vertices for Gravity Amplitudes
N. E. J. Bjerrum-Bohr, David C. Dunbar, Harald Ita +2
We obtain a CSW-style formalism for calculating graviton scattering amplitudes and prove its validity through the use of a special type of BCFW-like parameter shift. The procedure…
Recursive Calculation of One-Loop QCD Integral Coefficients
Zvi Bern, N. E. J. Bjerrum-Bohr, David C. Dunbar +1
We present a new procedure using on-shell recursion to determine coefficients of integral functions appearing in one-loop scattering amplitudes of gauge theories, including QCD. Wi…
Six-Point One-Loop N=8 Supergravity NMHV Amplitudes and their IR behaviour
N. E. J. Bjerrum-Bohr, David C. Dunbar, Harald Ita
We present compact formulas for the box coefficients of the six-point NMHV one-loop amplitudes in N=8 supergravity. We explicitly demonstrate that the corresponding box integral fu…
On Type II Strings in Two Dimensions
Harald Ita, Harald Nieder, Yaron Oz
We consider type IIA/B strings in two-dimensions and their projection with respect to the nilpotent space-time supercharge. Based on the ground ring structure, we propose a duality…