A new gravitational energy expression with a simple positivity proof |
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Authors: | James M Nester |
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Institution: | Theoretical Physics Institute, Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1, Canada |
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Abstract: | We present a new four-dimensionally covariant expression whose integral at space-like infinity gives the total energy for Einstein's theory of gravity. It is easy to show that the integral of its divergence over a space-like hypersurface is positive thereby providing a simple demonstration that Einstein gravity has positive energy. |
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