Lower-dimensional theories of gravity and gravitational waves |
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| Authors: | F I Cooperstock V Faraoni |
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| Institution: | (1) Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, V8W 3P6 Victoria, B.C., Canada |
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| Abstract: | We demonstrate that there are no gravitational waves in vacuum in 1+1 gravity, with or without a cosmological constant, and a wave-like field in regions of non-vanishing T v is quite unlike a conventional gravitational wave in 3+1 gravity. This, and other dissimilarities, lend a word of caution to the extraction of information from lower-dimensional theories for the understanding of 3+1 gravity. |
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