Dark Energy from Primordial Inflationary Quantum Fluctuations
(2010) Physical Review Letters — Vol. 105, p. 121301 [4 pages] (2010)
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- Authors
- Abstract
- We show that current cosmic acceleration can be explained by an almost massless scalar field experiencing quantum fluctuations during primordial inflation. Provided its mass does not exceed the Hubble parameter today, this field has been frozen during the cosmological ages to start dominating the Universe only recently. By using supernovae data, completed with baryonic acoustic oscillations from galaxy surveys and cosmic microwave background anisotropies, we infer the energy scale of primordial inflation to be around a few TeV, which implies a negligible tensor-to-scalar ratio of the primordial fluctuations. Moreover, our model suggests that inflation lasted for an extremely long period. Dark energy could therefore be a natural consequence of cosmic inflation close to the electroweak energy scale.
- Affiliations
Research Center for the Early Universe, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan Department of Physics, Saga University, Saga 840-8502, Japan Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan Department of Physics and Astrophysics, Nagoya University, Aichi 464-8602, Japan
Citations
Ringeval, C., Suyama, T., Takahashi, T., Yamaguchi, M., & Yokoyama, S. (2010). Dark Energy from Primordial Inflationary Quantum Fluctuations. Physical Review Letters, 105, 121301 [4 pages]. https://doi.org/10.1103/PhysRevLett.105.121301 (Original work published 2010)