An approach toward the laboratory search for the scalar field as a candidate of Dark Energy

Details An approach toward the laboratory search for the scalar field as a candidate of Dark Energy An approach toward the laboratory search for the scalar field as a candidate of Dark Energy

2010-06-09

arxiv.org/abs/1006.1762v3

Prog. Theor. Phys. 126 (2011), 531-553

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 6 figure. Accepted by Progress of Theoretical Physics

Scientific paper

10.1143/PTP.126.531

The observed accelerating universe indicates the presence of Dark Energy which is probably interpreted in terms of an extremely light gravitational scalar field. We suggest a way to probe this scalar field which contributes to optical light-by-light scattering through the resonance in the quasi-parallel collision geometry. As we find, the frequency-shifted photons with the specifically chosen polarization state can be a distinct signature of the scalar-field-exchange process in spite of the extremely narrow width due to the gravitationally weak coupling to photons. Main emphasis will be placed in formulating a prototype theoretical approach, then showing how the weak signals from the gravitational coupling are enhanced by other non-gravitational effects at work in laser experiments.

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