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On Dynamical Adjustment Mechanisms for the Cosmological Constant

A. Hebecker
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Abstract

After recalling why dynamical adjustment mechanisms represent a particularly attractive possibility for solving the cosmological constant problem, we briefly discuss their intrinsic difficulties as summarized in Weinberg's no-go theorem. We then comment on some problems of the recently proposed `self-tuning' mechanism in 4+1 dimensions. Finally, we describe an alternative approach which uses the time-evolution of the universe to achieve a dynamical relaxation of the cosmological constant to zero.

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A. Hebecker. 2001-05-30. On Dynamical Adjustment Mechanisms for the Cosmological Constant. https://arxiv.org/abs/hep-ph/0105315

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