Spacetime slicing independent apparent horizons are null
Year: 2021
Type: preprint
Abstract: We study the geometry of spacelike surfaces in a 4-dimensional spacetime using double null coordinate systems. We prove that a hypersurface, with the property that any spacelike section is marginally trapped, must be a null apparent horizon. This is equivalent to say that a spacetime slicing independent apparent horizon must be null. Moreover if the spacetime satisfies the null convergence condition, then the null apparent horizon is shear-free.
Source: arXiv (Cornell University)
Author: Pengyu Le
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3199928215