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Paper detail

Exploring Critical Collapse in the Semilinear Wave Equation using Space-Time Finite Elements

A fully implicit numerical approach based on the space-time finite element method is implemented for the semilinear wave equation in 1(space) + 1(time) and 2 + 1 dimensions to explore critical collapse and search for self-similar solutions. Previous work studied this behavior by exploring the threshold of singularity formation using time marching finite difference techniques while this work introduces an adaptive time parallel numerical method to the problem. The semilinear wave equation with a $p = 7$ term is examined in spherical symmetry. The impact of mesh refinement and the time additive Schwarz preconditioner in conjunction with Krylov Subspace Methods are examined.

preprint2020arXivOpen access
Hyun LimMatthew AndersonJung-Han Kimn
physics.comp-phmath.NAgr-qcNumerical Analysis
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Hyun LimMatthew AndersonJung-Han Kimn

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