Radiative inflation and dark energy RIDEs again after BICEP2

Journal Article · Fri Aug 01 00:00:00 EDT 2014 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2014/08/040· OSTI ID:22373393

Bari, Pasquale Di; King, Stephen F.; Merle, Alexander ^[1]; Luhn, Christoph ^[2]; Schmidt-May, Angnis ^[3]

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1. Physics and Astronomy, University of Southampton, Highfield Campus, Southampton, SO17 1BJ (United Kingdom)
2. Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, Siegen, D-57068 (Germany)
3. Department of Physics and The Oskar Klein Centre, Stockholm University, AlbaNova University Centre, Stockholm, SE-106 91 (Sweden)

Following the ground-breaking measurement of the tensor-to-scalar ratio r=0.20{sup +0.07}{sub -0.05} by the BICEP2 collaboration, we perform a statistical analysis of a model that combines Radiative Inflation with Dark Energy (RIDE) based on the M{sup 2}|Φ|{sup 2}ln(|Φ|{sup 2}/Λ{sup 2}) potential and compare its predictions to those based on the traditional chaotic inflation M{sup 2}|Φ|{sup 2} potential. We find a best-fit value in the RIDE model of r=0.18 as compared to r=0.17 in the chaotic model, with the spectral index being n{sub S}=0.96 in both models.

• OSTI ID: 22373393
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CHAOS THEORY
COMPARATIVE EVALUATIONS
COSMOLOGICAL INFLATION
NONLUMINOUS MATTER
POTENTIALS
SCALARS
TENSORS