Supergravity and Two-Field Inflation Effects in Right-Handed Sneutrino-Modified D-term Inflation

Simple item page
dc.creatorLin, Chia-Min
dc.creatorMcDonald, John
dc.date2007-10-23
dc.date2008-03-13
dc.date.accessioned2026-07-07T11:12:32Z
dc.date.available2026-07-07T11:12:32Z
dc.descriptionWe extend previous work on the minimal D-term inflation model modified by Right-Handed (RH) sneutrino fields to include additional inflaton-sector SUGRA corrections and two-field inflation effects. We show that SUGRA corrections simultaneously allow n_{s} to be within 3-year WMAP limits and the cosmic string contribution to the CMB power spectrum to be less than 5%. For gauge coupling g < 1, the CMB contribution from cosmic strings is predicted to be at least 1% while the spectral index is predicted to be less than 0.968 for a CMB string contribution less than 5%. Treating the inflaton-RH sneutrino system as a two-field inflation model, we show that the time-dependence of the RH sneutrino field strongly modifies the single-field results for values of RH sneutrino mass m_Φ > 0.1 H. The running spectral index is α= -0.0002 when m_Φ < 0.1 H but increases to positive values as m_Φ/H increases, with α> 0.008 for m_Φ > 1.0 H.
dc.description22 pages LaTeX, 14 eps figures, to be published in Physical Review D
dc.identifierhttps://arxiv.org/abs/0710.4273
dc.identifierhttp://arxiv.org/abs/0710.4273
dc.identifierPhys.Rev.D77:063529,2008
dc.identifierdoi:10.1103/PhysRevD.77.063529
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191410
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleSupergravity and Two-Field Inflation Effects in Right-Handed Sneutrino-Modified D-term Inflation
dc.typetext

Files

Collections

arXiv