Unparticles and inflation

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dc.creatorCollins, Hael
dc.creatorHolman, R.
dc.date2008-02-29
dc.date2008-11-06
dc.date.accessioned2026-07-07T12:14:14Z
dc.date.available2026-07-07T12:14:14Z
dc.descriptionWe study some of the roles for unparticles in an inflationary universe. Unparticles by themselves are not appropriate for generating the primordial perturbations since their power spectrum does not match what has been inferred from observations. In fact, when the scaling dimension for the unparticles exceeds three-halves, the unparticle power spectrum diverges. However, when a unparticle couples to an ordinary inflaton particle, loop corrections can produce a slight enhancement of the inflaton's power spectrum at longer wavelengths. We examine these loop corrections from unparticles in some detail to learn how they scale in the wavelength of a perturbation and how they depend on the scaling dimension of the field.
dc.description10 pages, 3 eps figures, uses ReVTeX; replaced with published version
dc.identifierhttps://arxiv.org/abs/0802.4416
dc.identifierhttp://arxiv.org/abs/0802.4416
dc.identifierPhys.Rev.D78:025023,2008
dc.identifierdoi:10.1103/PhysRevD.78.025023
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211124
dc.subjectHigh Energy Physics - Phenomenology
dc.titleUnparticles and inflation
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