Accelerating universe and the time-dependent fine-structure constant

Details Accelerating universe and the time-dependent fine-structure constant Accelerating universe and the time-dependent fine-structure constant

2009-10-27

arxiv.org/abs/0910.5090v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages. In Press in IAU 2009 JD9 conference proceedings. MmSAIt, vol.80, eds. Paolo Molaro and Elisabeth Vangioni

Scientific paper

Theoretical background of our proposed relation between the accelerating universe and the time-variability of the fine-structure constant is discussed, based on the scalar-tensor theory, with emphases on the intuitive aspects of underlying physical principles. An important comment is added on the successful understanding of the size of the effective cosmological constant responsible for the acceleration, without appealing to fine-tuning parameters.

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