Naturalness of exponential cosmon potentials and the cosmological constant problem

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dc.creatorWetterich, C.
dc.date2008-01-21
dc.date.accessioned2026-07-07T11:55:24Z
dc.date.available2026-07-07T11:55:24Z
dc.descriptionWe discuss the naturalness of exponential potentials for quintessence, showing that the resulting almost flat direction in the space of scalar fields, as well as the small time dependent cosmon mass, can be related to an anomalous dilatation symmetry. We argue that the physics of the cosmological constant is Planck scale physics, and comment on the role of quantum fluctuations. We present three higher dimensional scenarios how a runaway of the ``cosmological constant'' to zero can be combined with stable particle physics properties, leading at most to small variations of the ``fundamental couplings''.
dc.description19 pages
dc.identifierhttps://arxiv.org/abs/0801.3208
dc.identifierhttp://arxiv.org/abs/0801.3208
dc.identifierPhys.Rev.D77:103505,2008
dc.identifierdoi:10.1103/PhysRevD.77.103505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205230
dc.subjectHigh Energy Physics - Theory
dc.titleNaturalness of exponential cosmon potentials and the cosmological constant problem
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