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19912026
Showing 2002 · gr-qcShow all

8 papers · 2 filters

gr-qc2002★ 38 cited

Toward stable 3D numerical evolutions of black-hole spacetimes

Mark A. Scheel, Lawrence E. Kidder, Lee Lindblom +2

Three dimensional (3D) numerical evolutions of static black holes with excision are presented. These evolutions extend to about 8000M, where M is the mass of the black hole. This d…

gr-qc2002★ 84 cited

Detection methods for non-Gaussian gravitational wave stochastic backgrounds

Steve Drasco, Eanna E. Flanagan

We address the issue of finding an optimal detection method for a discontinuous or intermittent gravitational wave stochastic background. Such a signal might sound something like p…

gr-qc2002★ 49 cited

Quantum inequalities in two dimensional curved spacetimes

Eanna E. Flanagan

We generalize a result of Vollick constraining the possible behaviors of the renormalized expected stress-energy tensor of a free massless scalar field in two dimensional spacetime…

gr-qc2002★ 241 cited

Extrinsic Curvature and the Einstein Constraints

Harald P. Pfeiffer, James W. York

The Einstein initial-value equations in the extrinsic curvature (Hamiltonian) representation and conformal thin sandwich (Lagrangian) representation are brought into complete confo…

gr-qc2002★ 31 cited

The r-modes in accreting neutron stars with magneto-viscous boundary layers

Justin B. Kinney, Gregory Mendell

We explore the dynamics of the r-modes in accreting neutron stars in two ways. First, we explore how dissipation in the magneto-viscous boundary layer (MVBL) at the crust-core inte…

gr-qc2002★ 73 cited

Comparing initial-data sets for binary black holes

Harald P. Pfeiffer, Gregory B. Cook, Saul A. Teukolsky

We compare the results of constructing binary black hole initial data with three different decompositions of the constraint equations of general relativity. For each decomposition…

gr-qc2002★ 246 cited

A multidomain spectral method for solving elliptic equations

Harald P. Pfeiffer, Lawrence E. Kidder, Mark A. Scheel +1

We present a new solver for coupled nonlinear elliptic partial differential equations (PDEs). The solver is based on pseudo-spectral collocation with domain decomposition and can h…

gr-qc2002★ 52 cited

Spin Foam Models of Riemannian Quantum Gravity

John C. Baez, J. Daniel Christensen, Thomas R. Halford +1

Using numerical calculations, we compare three versions of the Barrett-Crane model of 4-dimensional Riemannian quantum gravity. In the version with face and edge amplitudes as desc…