1998/03/03 by R. Brustein, M. Gasperini, G. Veneziano · 5 citations
Physics and Astronomy · #Advanced Mathematical Theories and Applications #Cosmological perturbation theory #Cosmology and Gravitation Theories #Curvature #Duality (order theory) #Horizon #Invariant (physics) #Moduli #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Quantum and Classical Electrodynamics #gr-qc #hep-th
paper · pdf · doi:10.1016/s0370-2693(98)00576-0
published as Phys.Lett. B431 (1998) 277-285 · 14 pages, LATEX, no figures
arxiv created 1998/03/03 · openalex publication_date 1998/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Cosmological perturbation equations derived from low-energy effective actions are shown to be invariant under a duality transformation reminiscent of electric-magnetic, strong-weak coupling, S-duality. A manifestly duality-invariant approximation for perturbations far outside the horizon is introduced, and it is argued to be useful even during a high curvature epoch. Duality manifests itself through a remnant symmetry acting on the classical moduli of cosmological models, and implying lower bounds on the number and energy density of produced particles.