Thursday, October 27, 2011

1010.5729 (Pasquale Di Bari et al.)

Radiative Inflation and Dark Energy    [PDF]

Pasquale Di Bari, Stephen F. King, Christoph Luhn, Alexander Merle, Angnis Schmidt-May
We propose a model based on radiative symmetry breaking that combines inflation with Dark Energy and is consistent with the WMAP 7-year regions. The radiative inflationary potential leads to the prediction of a spectral index 0.955 \lesssim n_S \lesssim 0.967 and a tensor to scalar ratio 0.142 \lesssim r \lesssim 0.186, both consistent with current data but testable by the Planck experiment. The radiative symmetry breaking close to the Planck scale gives rise to a pseudo Nambu-Goldstone boson with a gravitationally suppressed mass which can naturally play the role of a quintessence field responsible for Dark Energy. Finally, we present a possible extra dimensional scenario in which our model could be realised.
View original: http://arxiv.org/abs/1010.5729

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