31 citations · 110 across the 6 of their papers we have counts for
6 papers
On turbulence for spacetimes with stable trapping
Gabriele Benomio, Alejandro Cárdenas-Avendaño, Frans Pretorius +1
Motivated by understanding the nonlinear gravitational dynamics of spacetimes admitting stably trapped null geodesics, such as ultracompact objects and black string solutions to ge…
The Effects of Multiple Modes and Reduced Symmetry on the Rapidity and Robustness of Slow Contraction
Anna Ijjas, Frans Pretorius, Paul J. Steinhardt +1
We demonstrate that the rapidity and robustness of slow contraction in homogenizing and flattening the universe found in simulations in which the initial conditions were restricted…
Ultralocality and Slow Contraction
Anna Ijjas, Andrew P. Sullivan, Frans Pretorius +2
We study the detailed process by which slow contraction smooths and flattens the universe using an improved numerical relativity code that accepts initial conditions with non-pertu…
Numerical Black Hole Solutions in Modified Gravity Theories: Axial Symmetry Case
Andrew Sullivan, Nicolás Yunes, Thomas P. Sotiriou
We extend a recently developed numerical code to obtain stationary, axisymmetric solutions that describe rotating black hole spacetimes in a wide class of modified theories of grav…
Exact Black Hole Solutions in Modified Gravity Theories: Spherical Symmetry Case
Andrew Sullivan, Nicolás Yunes, Thomas P. Sotiriou
Detailed observations of phenomena involving black holes, be it via gravitational waves or more traditional electromagnetic means, can probe the strong field regime of the gravitat…
Slowly-Rotating Neutron Stars in Massive Bigravity
Andrew Sullivan, Nicolas Yunes
We study slowly-rotating neutron stars in ghost-free massive bigravity. This theory modifies General Relativity by introducing a second, auxiliary but dynamical tensor field that c…