2004/03/31 by V. N. Şenoğuz, V. N. Senoguz, Qaisar Shafi +1 · 2 citations
Mathematics · Physics and Astronomy · #CMB cold spot #Cosmic microwave background #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electron #Inflation (cosmology) #Inflaton #Leptogenesis #Lepton #Mathematics #Neutrino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Spectral index #Spectral line #Symmetry (geometry) #Theoretical physics #Thermodynamics #Yield (engineering) #hep-ph
paper · pdf · doi:10.1016/j.physletb.2004.05.077
published as Phys.Lett.B596:8-15,2004 · 14 pages, 4 figures, revtex4. v2: no changes in content, page layout corrected. v3: the erroneous mention of new inflation as inverted hybrid inflation is corrected. v4: slightly abridged, matches published version
openalex publication_date 2004/06/25 · arxiv created 2004/07/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a new inflation model in which the inflationary scenario including subsequent reheating is determined in part by a U(1)R×Zn symmetry. A preinflation epoch can be introduced to yield, among other things, a running spectral index indicated by the WMAP analysis. The inflaton decay into right-handed neutrinos, whose masses can be hierarchical because of the Zn symmetry, leads to a reheat temperature ≳108 GeV (∼104–106 GeV in some cases), followed by non-thermal leptogenesis.