TY - JOUR
T1 - Duality in cosmological perturbation theory
AU - Brustein, R.
AU - Gasperini, M.
AU - Veneziano, G.
N1 - Funding Information:
We are grateful to A. Buonanno, K.A. Meissner and C. Ungarelli for interesting discussions. R. B. is supported in part by the Israel Science Foundation administered by the Israel Academy of Sciences and Humanities.
PY - 1998/7/16
Y1 - 1998/7/16
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0347603205&partnerID=8YFLogxK
U2 - 10.1016/S0370-2693(98)00576-0
DO - 10.1016/S0370-2693(98)00576-0
M3 - Article
AN - SCOPUS:0347603205
VL - 431
SP - 277
EP - 285
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3-4
ER -