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Lorentz Invariance and the Cosmological Constant

Orfeu Bertolami
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Abstract

Non-trivial solutions in string field theory may lead to the spontaneous breaking of Lorentz invariance and to new tensor-matter interactions. It is argued that requiring the contribution of the vacuum expectation values of Lorentz tensors to account for the vacuum energy up to the level that $Ω_{0}^Λ = 0.5$ implies the new interactions range is $λ\sim 10^{-4} m$. These conjectured violations of the Lorentz symmetry are consistent with the most stringent experimental limits.

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Orfeu Bertolami. 1997-06-04. Lorentz Invariance and the Cosmological Constant. https://doi.org/10.1088/0264-9381%2F14%2F10%2F007

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