The scaling evolution of cosmological constant

Details The scaling evolution of cosmological constant The scaling evolution of cosmological constant

2000-12-22

arxiv.org/abs/hep-th/0012227v3

JHEP 0202:006,2002

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, 1 figure using axodraw. Extended version. The title and the part of the discussion concerning a gravitational energy

Scientific paper

10.1088/1126-6708/2002/02/006

In quantum field theory the parameters of the vacuum action are subject to renormalization group running. In particular, the ``cosmological constant'' is not a constant in a quantum field theory context, still less should be zero. In this paper we continue with previous work, and derive the particle contributions to the running of the cosmological and gravitational constants in the framework of the Standard Model in curved space-time. At higher energies the calculation is performed in a sharp cut off approximation. We assess, in two different frameworks, whether the scaling dependences of the cosmological and gravitational constants spoil primordial nucleosynthesis. Finally, the cosmological implications of the running of the cosmological constant are discussed.

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