Big bang nucleosynthesis constraints on scalar-tensor theories of gravity

Journal Article · Sat Apr 15 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.083525· OSTI ID:20782896

Coc, Alain; Olive, Keith A; Uzan, Jean-Philippe; Vangioni, Elisabeth ^[1]

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1. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, IN2P3/CNRS/UPS, Batiment 104, 91405 0rsay Campus (France)

We investigate Big bang nucleosynthesis (BBN) in scalar-tensor theories of gravity with arbitrary matter couplings and self-interaction potentials. We first consider the case of a massless dilaton with a quadratic coupling to matter. We perform a full numerical integration of the evolution of the scalar field and compute the resulting light element abundances. We demonstrate in detail the importance of particle mass thresholds on the evolution of the scalar field in a radiation dominated universe. We also consider the simplest extension of this model including a cosmological constant in either the Jordan or Einstein frame.

• OSTI ID: 20782896
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 8; Other Information: DOI: 10.1103/PhysRevD.73.083525; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL CONSTANT
COSMOLOGY
COUPLING
ELEMENT ABUNDANCE
EVOLUTION
GRAVITATION
NUCLEOSYNTHESIS
POTENTIALS
REST MASS
SCALAR FIELDS
SCALARS
TENSORS
UNIVERSE