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9 papers · 1 filter
Linear relations between N >= 4 supergravity and subleading-color SYM amplitudes
Stephen G. Naculich, Horatiu Nastase, Howard J. Schnitzer
The IR divergences of supergravity amplitudes are less severe than those of planar SYM amplitudes, and are comparable to those subleading-color SYM amplitudes that are most sublead…
SU(N) group-theory constraints on color-ordered five-point amplitudes at all loop orders
Alexander C. Edison, Stephen G. Naculich
Color-ordered amplitudes for the scattering of n particles in the adjoint representation of SU(N) gauge theory satisfy constraints arising solely from group theory. We derive these…
Form factors and scattering amplitudes in N=4 SYM in dimensional and massive regularizations
Johannes M. Henn, Sven Moch, Stephen G. Naculich
The IR-divergent scattering amplitudes of N=4 supersymmetric Yang-Mills theory can be regulated in a variety of ways, including dimensional regularization and massive (or Higgs) re…
All-loop group-theory constraints for color-ordered SU(N) gauge-theory amplitudes
Stephen G. Naculich
We derive constraints on the color-ordered amplitudes of the L-loop four-point function in SU(N) gauge theories that arise solely from the structure of the gauge group. These const…
Oppenheimer-Snyder Collapse in Moving-Puncture Coordinates
Alexa N. Staley, Thomas W. Baumgarte, J. David Brown +2
Moving-puncture coordinates are commonly used in numerical simulations of black holes. Their properties for vacuum Schwarzschild black holes have been analyzed in a number of studi…
Puncture black hole initial data in the conformal thin-sandwich formalism
Thomas W. Baumgarte
We revisit the construction of puncture black hole initial data in the conformal thin-sandwich decomposition of Einstein's constraint equations. It has been shown previously that t…