Cosmological Constant from Conformal Fluctuations of the Metric

Details Cosmological Constant from Conformal Fluctuations of the Metric Cosmological Constant from Conformal Fluctuations of the Metric

2001-07-26

arxiv.org/abs/astro-ph/0107503v1

Astronomy and Astrophysics

Astrophysics

5 pages, LaTeX, 1 figure (EPS)

Scientific paper

At the level of the Planck scale, the spacetime metric has to be considered a quantum variable. Conformal quantum fluctuations of the metric tensor are studied here. They lead to an extra term in the Einstein equations which can be identified with a cosmological constant. Quantum fluctuations may therefore contribute to an accelerated expansion of the universe, in accordance with newer observational data.

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