Cosmic Strings in an Open Universe: Quantitative Evolution and Observational Consequences

Abstract

The cosmic string scenario in an open universe is developed -- including the equations of motion, a model of network evolution, the large angular scale CMB temperature anisotropy, and the power spectrum of density fluctuations produced by cosmic strings with dark matter. First we derive the equations of motion for cosmic string in an open FRW space-time and construct a quantitative model of the evolution of the gross features of a cosmic string network. Second, we apply this model of network evolution to estimate the rms CMB temperature anisotropy induced by cosmic strings, obtaining the normalization for the mass per unit length $\mu$ as a function of $\Omega$. Third, we consider the effects of the network evolution and normalization in an open universe on the large scale structure formation scenarios with either cold or hot dark matter.

15 pages, Latex, 3 postscript figures, accepted for publication in Phys. Rev. D

References in corpus (2)

• Power Spectra in Global Defect Theories of Cosmic Structure Formation
• CMB Anisotropy Induced by Cosmic Strings on Angular Scales $>15^{\prime }$

Cited by in corpus (20)

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• Extending the Velocity-dependent One-scale String Evolution Model
• Extracting Primordial Density Fluctuations
• Multiple Inflation, Cosmic String Networks and the String Landscape
• A detail study of defect models for cosmic structure formation
• Structure formation by cosmic strings with a cosmological constant
• Cosmic structure formation in Hybrid Inflation models
• Cosmic-String-Seeded Structure Formation
• Vorton Formation
• Evolution of a global string network in a matter dominated universe
• Topological defects: fossils of an anisotropic era?
• Cosmological Consequences of String-forming Open Inflation Models
• Evolution of Superconducting String Currents
• Cosmic string loops and large-scale structure
• Galaxy-QSO Correlation induced by Weak Gravitational Lensing arising from Large-Scale Structure
• Reionization by active sources and its effects on the cosmic microwave background
• The growth of linear perturbations in generic defect models for structure formation
• Topological defects: A problem for cyclic universes?
• The cluster abundance in cosmic string models for structure formation
• The Peculiar-Velocity-Field in Structure Formation Theories with Cosmic Strings