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

Abstract

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.

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

References in corpus (1)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

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