Conformal Thin-Sandwich Solver for Generic Initial Data

摘要: We present a new scheme for constructing initial data the Einstein field equations using conformal thin-sandwich formulation that does not assume flatness or approximate Killing vectors. This includes method determining free based on superposition, as well way to handle black hole singularities without excision. numerically solve constraint multigrid algorithm with mesh refinement. demonstrate efficacy of solutions several applications: quasicircular binary merger, dynamical capture hole-neutron star and an ultrarelativistic collision.