51 citations · 152 across the 11 of their papers we have counts for
11 papers
Dynamical perturbations of black-hole punctures: effects of slicing conditions
Sean E. Li, Thomas W. Baumgarte, Kenneth A. Dennison +1
While numerous numerical relativity simulations adopt a 1+log slicing condition, shock-avoiding slicing conditions form a viable and sometimes advantageous alternative. Despite bot…
Bona-Massó slices of Reissner-Nordström spacetimes
Sean E. Li, Thomas W. Baumgarte, Kenneth A. Dennison +1
Motivated by recent numerical relativity simulations of charged black holes and their interactions, we explore the properties of common slicing conditions in Reissner-Nordström spa…
Maximally Rotating Supermassive Stars at the Onset of Collapse: Effects of Gas Pressure
Kenneth A. Dennison, Thomas W. Baumgarte, Stuart L. Shapiro
The "direct collapse" scenario has emerged as a promising evolutionary track for the formation of supermassive black holes early in the Universe. In an idealized version of such a…
Schwarzschild-de Sitter Spacetimes, McVittie Coordinates, and Trumpet Geometries
Kenneth A. Dennison, Thomas W. Baumgarte
Trumpet geometries play an important role in numerical simulations of black hole spacetimes, which are usually performed under the assumption of asymptotic flatness. Our Universe i…
Trumpet Slices in Kerr Spacetimes
Kenneth A. Dennison, Thomas W. Baumgarte, Pedro J. Montero
We introduce a new time-independent family of analytical coordinate systems for the Kerr spacetime representing rotating black holes. We also propose a (2+1)+1 formalism for the ch…
A Simple Family of Analytical Trumpet Slices of the Schwarzschild Spacetime
Kenneth A. Dennison, Thomas W. Baumgarte
We describe a simple family of analytical coordinate systems for the Schwarzschild spacetime. The coordinates penetrate the horizon smoothly and are spatially isotropic. Spatial sl…
Invariants for Tendex and Vortex Fields
Kenneth A. Dennison, Thomas W. Baumgarte
Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approa…
Analytical Tendex and Vortex Fields for Perturbative Black Hole Initial Data
Kenneth A. Dennison, Thomas W. Baumgarte
Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approa…
Trumpet slices of the Schwarzschild-Tangherlini spacetime
Kenneth A. Dennison, John P. Wendell, Thomas W. Baumgarte +1
We study families of time-independent maximal and 1+log foliations of the Schwarzschild-Tangherlini spacetime, the spherically-symmetric vacuum black hole solution in D spacetime d…
Approximate initial data for binary black holes
Kenneth A. Dennison, Thomas W. Baumgarte, Harald P. Pfeiffer
We construct approximate analytical solutions to the constraint equations of general relativity for binary black holes of arbitrary mass ratio in quasicircular orbit. We adopt the…
Entanglement sharing among qudits
Kenneth A. Dennison, William K. Wootters
Consider a system consisting of n d-dimensional quantum particles (qudits), and suppose that we want to optimize the entanglement between each pair. One can ask the following basic…