.png){kind=icon}
.png){kind=icon}
Return
Superstring cosmology
.png){kind=icon}
OA
AI
DOI：10.1016/S0370-1573(00)00064-8.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Aspects of superstring cosmology are reviewed with an emphasis on the cosmological implications of duality symmetries in the theory. The string effective actions are summarized and toroidal compactification to four dimensions reviewed. Global symmetries that arise in the compactification are discussed and the duality relationships between the string effective actions are then highlighted. Higher-dimensional Kasner cosmologies are presented and interpreted in both string and Einstein frames, and then given in dimensionally reduced forms. String cosmologies containing both non-trivial Neveu-Schwarz/Neveu-Schwarz and Ramond-Ramond fields are derived by employing the global symmetries of the effective actions. Anisotropic and inhomogeneous cosmologies in four dimensions are also developed. The review concludes with a detailed analysis of the pre-big bang inflationary scenario. The generation of primordial spectra of cosmological perturbations in such a scenario is discussed. Possible future directions offered in the Horava-Witten theory are outlined. (C) 2000 Elsevier Science B.V. All rights reserved.
Keywords:
HETEROTIC STRING THEORY
SCALAR-TENSOR COSMOLOGIES
ELECTRIC-MAGNETIC DUALITY
MAXWELL FIELD EQUATIONS
BIG-BANG COSMOLOGY
GENERALIZED GRAVITY THEORIES
SINGULARITY-FREE SOLUTIONS
PLANE GRAVITATIONAL-WAVES
KALUZA-KLEIN COSMOLOGIES
SOLVABLE LIE-ALGEBRAS
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
P
IF:
29.5
Papers:
3.0K
Citations:
3.8W
Organization
No organization information available