Negative energy and stability in scalar-tensor gravity
نویسنده
چکیده
Linearized gravitational waves in Brans-Dicke and scalar-tensor theories carry negative energy. A gauge-invariant analysis shows that the background Minkowski space is stable at the classical level with respect to linear scalar and tensor inhomogeneous perturbations. PACS: 04.20.Cv, 04.30.-w
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