Does The Cosmological Constant Problem Exist?

Details Does The Cosmological Constant Problem Exist? Does The Cosmological Constant Problem Exist?

2010-04-12

arxiv.org/abs/1004.1861v2

Physics

General Physics

12 pages, no figures, Latex. We give additional arguments that the cosmological constant problem (which is often called the da

Scientific paper

We first give simple arguments in favor of the "Zero Constants Party", i.e. that quantum theory should not contain fundamental dimensionful constants at all. Then we argue that quantum theory should proceed not from a space-time background but from a Lie algebra, which is treated as a symmetry algebra. With such a formulation of symmetry, the fact that $\Lambda\neq 0$ means not that the space-time background is curved (since the notion of the space-time background is not physical) but that the symmetry algebra is the de Sitter algebra rather than the Poincare one. In particular, there is no need to involve dark energy or other fields for explaining this fact. As a consequence, instead of the cosmological constant problem we have a problem why nowadays Poincare symmetry is so good approximate symmetry. This is rather a problem of cosmology but not fundamental quantum physics.

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