The eth formalism in numerical relativity

  title={The eth formalism in numerical relativity},
  author={Roberto Gomez and Luis Lehner and Philippos Papadopoulos and Jeffrey Winicour},
We present a finite difference version of the eth formalism, which allows use of tensor fields in spherical coordinates in a manner which avoids polar singularities. The method employs two overlapping stereographic coordinate patches, with interpolations between the patches in the regions of overlap. It provides a new and effective computational tool for dealing with a wide variety of systems in which spherical coordinates are natural, such as the generation of radiation from an isolated source… CONTINUE READING
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