Nonuniversal scalar-tensor theories and big bang nucleosynthesis
We investigate the constraints that can be set from big bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated. In the latter case, and for a massless dilaton wi...
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| Veröffentlicht in: | Physical review. D 2009-05, Vol.79 (10), Article 103512 |
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| creator | Coc, Alain Olive, Keith A. Uzan, Jean-Philippe Vangioni, Elisabeth |
| description | We investigate the constraints that can be set from big bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated. In the latter case, and for a massless dilaton with quadratic couplings, the phase space of theories is investigated. We delineate those theories where attraction toward general relativity occurs. It is shown that big bang nucleosynthesis sets more stringent constraints than those obtained from Solar System tests. |
| doi_str_mv | 10.1103/PhysRevD.79.103512 |
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| source | American Physical Society Journals |
| subjects | Astrophysics Cosmology and Extra-Galactic Astrophysics EQUIVALENCE PRINCIPLE General Relativity and Quantum Cosmology GENERAL RELATIVITY THEORY GRAVITATION NONLUMINOUS MATTER NUCLEOSYNTHESIS PHASE SPACE Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Sciences of the Universe SOLAR SYSTEM |
| title | Nonuniversal scalar-tensor theories and big bang nucleosynthesis |
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