Renormalization group running cosmologies - from a scale setting to holographic dark energy

Details Renormalization group running cosmologies - from a scale setting to holographic dark energy Renormalization group running cosmologies - from a scale setting to holographic dark energy

2007-07-25

arxiv.org/abs/0707.3778v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Invited plenary talk given at the 2nd International Conference on Quantum Theories and Renormalization Group in Gravity and Co

Scientific paper

A scale-dependent cosmological constant $\Lambda$ and the Newton constant G emerge naturally in quantum field theory in a curved space-time background leading to renormalization group running cosmologies. A scale-setting procedure is discussed in these cosmological models and the interpretation of the scale is emphasized. This setup introduces dark energy without invoking quintessence-like fields and can be applied to a variety of problems. The scale-dependent $\Lambda$ and G are also naturally incorporated into the generalized holographic dark energy model, and applied to different aspects of cosmology.

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