Duality in cosmological perturbation theory

被引：48

作者：

Brustein, R ^{[1
]}

Gasperini, M

Veneziano, G

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[3] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy

[4] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

来源：

PHYSICS LETTERS B | 1998年 / 431卷 / 3-4期

基金：

以色列科学基金会;

关键词：

D O I：

10.1016/S0370-2693(98)00576-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：277 / 285

页数：9

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