Very Light Cosmological Scalar Fields from a Tiny Cosmological Constant

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dc.creatorCalmet, Xavier
dc.date2007-05-03
dc.date2007-06-28
dc.date.accessioned2026-07-07T12:13:28Z
dc.date.available2026-07-07T12:13:28Z
dc.descriptionWe discuss a mechanism which generates a mass term for a scalar field in an expanding universe. The mass of this field turns out to be generated by the cosmological constant and can be naturally small if protected by a conformal symmetry which is however broken in the gravitational sector. The mass is comparable today to the Hubble time. This scalar field could thus impact our universe today and for example be at the origin of a time variation of the couplings and masses of the parameters of the standard model.
dc.description11 pages
dc.identifierhttps://arxiv.org/abs/0705.0445
dc.identifierhttp://arxiv.org/abs/0705.0445
dc.identifierPhys.Rev.D76:083502,2007
dc.identifierdoi:10.1103/PhysRevD.76.083502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210859
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleVery Light Cosmological Scalar Fields from a Tiny Cosmological Constant
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