A Newman-Penrose Calculator for Instanton Metrics
arXiv:0711.0613 · doi:10.1142/S0129183108012807
Abstract
We present a Maple11+GRTensorII based symbolic calculator for instanton metrics using Newman-Penrose formalism. Gravitational instantons are exact solutions of Einstein's vacuum field equations with Euclidean signature. The Newman-Penrose formalism, which supplies a toolbox for studying the exact solutions of Einstein's field equations, was adopted to the instanton case and our code translates it for the computational use.
13 pages. Matches the published version. The web page of the codes is changed as https://github.com/tbirkandan/NPInstanton