2003/03/31 by MITSUO J. HAYASHI, Mitsuo J. Hayashi, Tomoki Watanabe +5 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #CMB cold spot #Context (archaeology) #Cosmology and Gravitation Theories #Dilaton #Duality (order theory) #Hidden sector #Inflation (cosmology) #Particle physics theoretical and experimental studies #Supergravity #Supersymmetry #Supersymmetry breaking #hep-ph
paper · pdf · doi:10.1142/s0217732303012465
published as Mod.Phys.Lett.A18:2785-2794,2003 · 10 pages, 4 eps figures. Typos and references corrected. Final version to appear in Mod. Phys. Lett. A
arxiv created 2003/11/12 · openalex publication_date 2003/12/04 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The theory of inflation will be investigated as well as supersymmetry breaking in the context of supergravity, incorporating the target-space duality and the nonperturbative gaugino condensation in the hidden sector. We found an inflationary trajectory of a dilaton field and a condensate field which breaks supersymmetry at once. The model satisfies the slow-roll condition which solves the η-problem. When the particle rolls down along the minimized trajectory of the potential V(S,Y) at a duality invariant point of T=1, we can obtain the e-fold value ~57. And then the cosmological parameters obtained from our model well match the recent WMAP data combined with other experiments. This observation suggests one to consider the string-inspired supergravity as a fundamental theory of the evolution of the universe as well as the particle theory.