Pseudotensor applied to numerical relativity in calculating global quantities

Chung Chin Tsai, Chun Yu Lin, Hwei Jang Yo

Research output: Contribution to journalArticle


In this work we apply the Landau-Lifshitz pseudotensor flux formalism to the calculation of the total mass and the total angular momentum during the evolution of a binary black hole system. We also compare its performance with the traditional integrations for the global quantities. The results show that the advantage of the pseudotensor flux formalism is the smoothness of the numerical value of the global quantities, especially of the total angular momentum. Although the convergence behavior of the global quantities with the pseudotensor flux method is only comparable with that of the traditional method, the smoothness of its numerical value allows using a larger radius for the surface integration to obtain a more accurate result.

Original languageEnglish
Article number110103
JournalChinese Journal of Physics
Issue number6
Publication statusPublished - 2015 Jan 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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