Inflation and dark energy from the Brans-Dicke theory

Journal Article · Wed Jun 17 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/06/031· OSTI ID:22454561

Artymowski, Michał ^[1]; Lalak, Zygmunt; Lewicki, Marek ^[2]

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1. Institute of Physics, Jagiellonian UniversityŁojasiewicza 11, 30-348 Kraków (Poland)
2. Institute of Theoretical Physics, Faculty of Physics, University of Warsawul. Pasteura 5, 02-093 Warszawa (Poland)

We consider the Brans-Dicke theory motivated by the f(R)=R+αR{sup n}−βR{sup 2−n} model to obtain a stable minimum of the Einstein frame scalar potential of the Brans-Dicke field. As a result we have obtained an inflationary scalar potential with non-zero value of residual vacuum energy, which may be a source of dark energy. In addition we discuss the probability of quantum tunnelling from the minimum of the potential. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n and ω.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22454561
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 06; Other Information: PUBLISHER-ID: JCAP06(2015)031; OAI: oai:repo.scoap3.org:10792; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANES
COSMOLOGICAL INFLATION
EINSTEIN FIELD EQUATIONS
GRAVITATION
NONLUMINOUS MATTER
TUNNEL EFFECT