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Phys. Rev. Lett. 82, 263–266 (1999)

Symmetric Hyperbolic System in the Ashtekar Formulation

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Gen Yoneda*
Department of Mathematical Science, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo 169-8790, Japan

Hisa-aki Shinkai
Department of Physics, Washington University, St. Louis, Missouri 63130-4899

Received 24 March 1998; published in the issue dated 11 January 1999

We present a first-order symmetric hyperbolic system in the Ashtekar formulation of general relativity for vacuum spacetime. We add terms from the constraint equations to the evolution equations with appropriate combinations, which is the same technique used by Iriondo, Leguizamón, and Reula [Phys. Rev. Lett. 79, 4732 (1997)]. However, our system is different from theirs in that we primarily use Hermiticity of a characteristic matrix of the system to characterize our system symmetric, discuss the consistency of this system with a reality condition, and show the characteristic speeds of the system.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.263
DOI:
10.1103/PhysRevLett.82.263
PACS:
04.20.Cv, 04.20.Ex, 04.20.Fy

*Electronic address: yoneda@mn.waseda.ac.jp

Electronic address: shinkai@null.wustl.edu