Cosmological Perturbations from a New-Physics Hypersurface

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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.
12 pages; corrected typos in the text; added two references

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High Energy Physics - Theory, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/177970

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0302184
 http://arxiv.org/abs/hep-th/0302184
 JCAP0305:001,2003
 doi:10.1088/1475-7516/2003/05/001

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arXiv