547 citations · 1.4k across the 15 of their papers we have counts for
5 papers · 1 filter
The Momentum Kernel of Gauge and Gravity Theories
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Thomas Sondergaard +1
We derive an explicit formula for factorizing an -point closed string amplitude into open string amplitudes. Our results are phrased in terms of a momentum kernel which in the l…
Proof of Gravity and Yang-Mills Amplitude Relations
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Bo Feng +1
Using BCFW on-shell recursion techniques, we prove a sequence of explicit n-point Kawai-Lewellen-Tye relations between gravity and Yang-Mills amplitudes at tree level.
New Identities among Gauge Theory Amplitudes
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Bo Feng +1
Color-ordered amplitudes in gauge theories satisfy non-linear identities involving amplitude products of different helicity configurations. We consider the origin of such identitie…
Gravity and Yang-Mills Amplitude Relations
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Bo Feng +1
Using only general features of the S-matrix and quantum field theory, we prove by induction the Kawai-Lewellen-Tye relations that link products of gauge theory amplitudes to gravit…
Monodromy and Jacobi-like Relations for Color-Ordered Amplitudes
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Thomas Sondergaard +1
We discuss monodromy relations between different color-ordered amplitudes in gauge theories. We show that Jacobi-like relations of Bern, Carrasco and Johansson can be introduced in…