More varieties of hybrid inflation

1996/06/22 by David H. Lyth, Ewan D. Stewart · 3 citations
Biochemistry, Genetics and Molecular Biology · Mathematics · Physics and Astronomy · #Contrast (vision) #Cosmology and Gravitation Theories #Economics #Field (mathematics) #Geomagnetism and Paleomagnetism Studies #Inflation (cosmology) #Inflaton #Mathematics #Physics #Pure mathematics #Quantum mechanics #Solar and Space Plasma Dynamics #Spectral index #Spectral line #Statistics #Theoretical physics #Value (mathematics) #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.54.7186

published as Phys.Rev.D54:7186-7190,1996 · 9 pages

arxiv created 1996/06/22 · openalex publication_date 1996/12/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

It is pointed out that hybrid inflation can be implemented with the inflaton field rolling away from the origin instead of towards it. This "inverted" hybrid inflation has a spectral index n<1, in contrast with ordinary hybrid inflation which has n\ensuremath\gtrsim1, so a measured value of n substantially different from 1 would distinguish the two. Other generalizations of hybrid inflation are also considered.

Citations

• The COBE normalization for standard cold dark matter
• A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
• The development of irregularities in a single bubble inflationary universe
• Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
• Dynamics of phase transition in the new inflationary universe scenario and generation of perturbations
• A General Analytic Formula for the Spectral Index of the Density Perturbations produced during Inflation
• Spontaneous creation of almost scale-free density perturbations in an inflationary universe
• Fluctuations in the New Inflationary Universe

Cited by

• Inflationary models with a flat potential enforced by non-Abelian discrete gauge symmetries
• Supersymmetric and smooth hybrid inflation in the light of WMAP3
• More hilltop inflation models