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7 papers · 1 filter
Relativistic Simulations of Black Hole-Neutron Star Mergers: Effects of black-hole spin
Zachariah B. Etienne, Yuk Tung Liu, Stuart L. Shapiro +1
Black hole-neutron star (BHNS) binary mergers are candidate engines for generating both short-hard gamma-ray bursts (SGRBs) and detectable gravitational waves. Using our most recen…
Excision boundary conditions for the conformal metric
Gregory B. Cook, Thomas W. Baumgarte
Shibata, Uryū and Friedman recently suggested a new decomposition of Einstein's equations that is useful for constructing initial data. In contrast to previous decompositions, the…
Equilibrium initial data for moving puncture simulations: The stationary 1+log slicing
T. W. Baumgarte, Z. B. Etienne, Y. T. Liu +4
We propose and explore a "stationary 1+log" slicing condition for the construction of solutions to Einstein's constraint equations. For stationary spacetimes, these initial data wi…
Subleading-color contributions to gluon-gluon scattering in N=4 SYM theory and relations to N=8 supergravity
Stephen G. Naculich, Horatiu Nastase, Howard J. Schnitzer
We study the subleading-color (nonplanar) contributions to the four-gluon scattering amplitudes in N=4 supersymmetric SU(N) Yang-Mills theory. Using the formalisms of Catani and of…
Two-loop graviton scattering relation and IR behavior in N=8 supergravity
Stephen G. Naculich, Horatiu Nastase, Howard J. Schnitzer
We derive an ABDK-like relation between the one- and two-loop four-graviton amplitudes in N=8 supergravity. Specifically we show that the infrared divergent part of the two-loop am…
Knuth Relations for the Hyperoctahedral Groups
Thomas Pietraho
C. Bonnaf{é}, M. Geck, L. Iancu, and T. Lam have conjectured a description of one-sided cells in unequal parameter Hecke algebras of type which is based on domino tableaux of a…