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From Tensor Equations to Numerical Code -- Computer Algebra Tools for Numerical Relativity
Christiane Lechner, Dana Alic, Sascha Husa
In this paper we present our recent work in developing a computer-algebra tool for systems of partial differential equations (PDEs), termed "Kranc". Our work is motivated by the pr…
News from Critical Collapse: Bondi Mass, Tails and Quasinormal Modes
Michael Pürrer, Sascha Husa, Peter C. Aichelburg
We discuss critical gravitational collapse on the threshold of apparent horizon formation as a model both for the discussion of global aspects of critical collapse and for numerica…
Kranc: a Mathematica application to generate numerical codes for tensorial evolution equations
Sascha Husa, Ian Hinder, Christiane Lechner
We present a suite of Mathematica-based computer-algebra packages, termed "Kranc", which comprise a toolbox to convert (tensorial) systems of partial differential evolution equatio…