Tuesday, November 20, 2012

1211.4426 (Horst Reinhard Beyer)

Nonuniqueness of Representations of Wave Equations in Lorentzian
Space-Times
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Horst Reinhard Beyer
This brief note wants to bring to attention that the formulation of physically reasonable initial-boundary value problems for wave equations in Lorentzian space-times is not unique, i.e., that there are inequivalent such formulations that lead to a different outcome of the stability discussion of the solutions. For demonstration, the paper uses the case of the wave equation on the right Rindler wedge in 2-dimensional Minkowski space. The used methods can be generalized to wave equations on stationary globally hyperbolic space-times with horizons in higher dimensions, such as Schwarzschild and Kerr space-times.
View original: http://arxiv.org/abs/1211.4426

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