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A Comment on Self-Tuning and Vanishing Cosmological Constant in the Brane World
classification
✦ hep-th
gr-qchep-ph
keywords
braneconstantcosmologicalcommentvanishingcancellationcontributionsdescribe
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In this note we elaborate on various five dimensional contributions to the effective 4D cosmological constant in brane systems. In solutions with vanishing 5D cosmological constant we describe a non-local mechanism of cancellation of vacuum energy between the brane and the singularities. We comment on a hidden fine tuning which is implied by this observation.
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