Categorizing Different Approaches to the Cosmological Constant Problem

Details Categorizing Different Approaches to the Cosmological Constant Problem Categorizing Different Approaches to the Cosmological Constant Problem

2004-11-18

arxiv.org/abs/gr-qc/0411093v3

Found.Phys.36:613-680,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

updated version, accepted for publication

Scientific paper

10.1007/s10701-005-9042-8

We have found that proposals addressing the old cosmological constant problem come in various categories. The aim of this paper is to identify as many different, credible mechanisms as possible and to provide them with a code for future reference. We find that they all can be classified into five different schemes of which we indicate the advantages and drawbacks. Besides, we add a new approach based on a symmetry principle mapping real to imaginary spacetime.

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