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Full-Text Articles in Physics
Implementation Of Standard Testbeds For Numerical Relativity, Maria Babiuc-Hamilton, Sascha Husa, Daniela Alic, Ian Hinder, Christiane Lechner, Erik Schnetter, Yosef Zlochower, Nils Dorband, Jeffrey Winicour, D. Pollney, B´Ela Szilagyi
Implementation Of Standard Testbeds For Numerical Relativity, Maria Babiuc-Hamilton, Sascha Husa, Daniela Alic, Ian Hinder, Christiane Lechner, Erik Schnetter, Yosef Zlochower, Nils Dorband, Jeffrey Winicour, D. Pollney, B´Ela Szilagyi
Maria Babiuc-Hamilton
We discuss results that have been obtained from the implementation of the initial round of testbeds for numerical relativity which was proposed in the first paper of the Apples with Apples Alliance. We present benchmark results for various codes which provide templates for analyzing the testbeds and to draw conclusions about various features of the codes. This allows us to sharpen the initial test specifications, design a new test and add theoretical insight.
Some Mathematical Problems In Numerical Relativity, Maria Babiuc-Hamilton, B´Ela Szilagyi, Jeffrey Winicour
Some Mathematical Problems In Numerical Relativity, Maria Babiuc-Hamilton, B´Ela Szilagyi, Jeffrey Winicour
Maria Babiuc-Hamilton
The main goal of numerical relativity is the long time simulation of highly nonlinear spacetimes that cannot be treated by perturbation theory. This involves analytic, computational and physical issues. At present, the major impasses to achieving global simulations of physical usefulness are of an analytic/ computational nature. We present here some examples of how analytic insight can lend useful guidance for the improvement of numerical approaches.
Binary Black Hole Waveform Extraction At Null Infinity, Maria Babiuc-Hamilton, Jeffrey Winicour, Yosef Zlochower
Binary Black Hole Waveform Extraction At Null Infinity, Maria Babiuc-Hamilton, Jeffrey Winicour, Yosef Zlochower
Maria Babiuc-Hamilton
In this paper, we present a work in progress toward an efficient and economical computational module which interfaces between Cauchy and characteristic evolution codes. Our goal is to provide a standardized waveform extraction tool for the numerical relativity community which will allow CCE to be readily applied to a generic Cauchy code. The tool provides a means of unambiguous comparison between the waveforms generated by evolution codes based upon different formulations of the Einstein equations and different numerical approximation.