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arXiv · 1108.5117

Response to "CPT symmetry and antimatter gravity in general relativity"

Daniel J. Cross
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Abstract

The observed accelerated cosmic expansion is problematic in that it seems to require an otherwise unobserved dark energy for its origin. A possible alternative explanation has been recently given, which attempts to account for this expansion in terms of a hypothesized matter-anti-matter repulsion. This repulsion or anti-gravity is derived by applying the CPT theorem to general relativity. We show that this proposal cannot work for two reasons: 1) it incorrectly predicts the behavior of photons and 2) the CPT transformation itself is not consistently applied.

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Daniel J. Cross. 2011-08-25. Response to "CPT symmetry and antimatter gravity in general relativity". https://arxiv.org/abs/1108.5117

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