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Large class of models ruled out.

  1. Nov 27, 2008 #1


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    arXiv:0811.4129 (cross-list from gr-qc) [ps, pdf, other]
    Title: Consistent Loop Quantum Cosmology
    Authors: Martin Bojowald
    Comments: 13 pages
    Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)
    A consistent combination of quantum geometry effects rules out a large class of models of loop quantum cosmology and their critical densities as they have been used in the recent literature. In particular, the critical density at which an isotropic universe filled with a free, massless scalar field would bounce must be well below the Planck density. In the presence of anisotropy, no model of the Schwarzschild black hole interior analyzed so far is consistent.
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