Long-wavelength gravitational waves and cosmic acceleration

Details Long-wavelength gravitational waves and cosmic acceleration Long-wavelength gravitational waves and cosmic acceleration

2011-09-20

arxiv.org/abs/1109.4315v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

80 pages, 2 figures

Scientific paper

Strong long-scale gravitational waves can explain cosmic acceleration within the context of general relativity without resorting to the assumption of exotic forms of matter such as quintessence. The existence of these gravitational waves in sufficient strength to cause observed acceleration can be compatible with the cosmic microwave background under reasonable physical circumstances. An instance of the Bianchi IX cosmology is demonstrated which also explains the alignment of low-order multipoles observed in the CMB. The model requires a closed cosmology but is otherwise not strongly constrained. Recommendations are made for further observations to verify and better constrain the model.

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