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arXiv · hep-th/0302184

Cosmological Perturbations from a New-Physics Hypersurface

V. Bozza·M. Giovannini·G. Veneziano
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Abstract

Within a broad class of inflationary models we critically analyze the way initial quantum fluctuations on a new-physics hypersurface (NPH) affect standard predictions for large-scale cosmological perturbations. We find that these so-called transplanckian effects depend crucially on the definition of the "vacuum state" in particular on which Hamiltonian is minimized on the NPH in order to select such a state. Transplanckian effects can be made much smaller than previously suggested if sufficiently "adiabatic" Hamiltonians are minimized.

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V. Bozza, M. Giovannini, G. Veneziano. 2003-03-04. Cosmological Perturbations from a New-Physics Hypersurface. https://doi.org/10.1088/1475-7516%2F2003%2F05%2F001

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