3 papers
gr-qc2026
Nonlinear Gravitational Wave Interactions in an Expanding Universe
Fan Zhang, Lee Lindblom, Zhi-Peng Peng
This study explores the nonlinear interactions between gravitational waves in an expanding universe. Random ensembles of gravitational waves are evolved numerically in cosmological…
gr-qc2026
Solving Einstein's Equation Numerically on Manifolds with Non-Orientable Spatial Slices
Fan Zhang, Lee Lindblom
This paper presents solutions to Einstein's equation -- and the numerical methods used to construct them -- that describe simple cosmological models on manifolds with compact non-o…
gr-qc2024
Solving the Einstein Constraints Numerically on Compact Three-Manifolds Using Hyperbolic Relaxation
Fan Zhang, Lee Lindblom
The effectiveness of the hyperbolic relaxation method for solving the Einstein constraint equations numerically is studied here on a variety of compact orientable three-manifolds.…