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arXiv · 0810.0104

The gravitational wave background from super-inflation in Loop Quantum Cosmology

E. J. Copeland·D. J. Mulryne·N. J. Nunes·M. Shaeri
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Abstract

We investigate the behaviour of tensor fluctuations in Loop Quantum Cosmology, focusing on a class of scaling solutions which admit a near scale-invariant scalar field power spectrum. We obtain the spectral index of the gravitational field perturbations, and find a strong blue tilt in the power spectrum with $n_t \approx 2$. The amplitude of tensor modes are, therefore, suppressed by many orders of magnitude on large scales compared to those predicted by the standard inflationary scenario where $n_t \approx 0$.

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E. J. Copeland, D. J. Mulryne, N. J. Nunes, M. Shaeri. 2008-10-01. The gravitational wave background from super-inflation in Loop Quantum Cosmology. https://doi.org/10.1103/physrevd.79.023508

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