DescriptionThe question of how to describe a natural ultraviolet cutoff in an expanding space-time is of significance in several respects. First, it concerns the fate of general covariance in the presence of a natural UV cutoff. Second, it concerns the continued generating of degrees of freedom through expansion, which carries with it the possibility of an associated generating of vacuum energy. Finally, through inflation, a natural ultraviolet cutoff may have left observable imprints in the CMB.
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Creation of Space, Field Energy and Modes
Robert Brout Université Libre de Bruxelles
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Trans - Planckian Issues for Inflationary Cosmology
Robert Brandenberger McGill University - Department of Physics
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QFT with minimum length
Sabine Hossenfelder Ludwig-Maximilians-Universität München (LMU)
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Inflationary cosmological pertubations of quantum mechanical origin
Jerome Martin Institut d'Astrophysique de Paris