Structure Formation in the Universe from Texture Induced Fluctuation

Abstract

The topic of this letter is structure formation with topological defects. We first present a partially new, fully local and gauge invariant system of perturbation equations to treat microwave background and dark matter fluctuations induced by topological defects (or any other type of seeds). We show that this treatment is extremly well suited for linear numerical analysis of structure formation by applying it to the texture scenario. Our numerical results cover a larger dynamical range than previous investigations and are complementary since we use substantially different methods.

8 pages, LaTeX, ZU-TH21/94

References in corpus (3)

• $\Pi$ in the Sky ? Microwave Anisotropies from Cosmic Defects
• COBE's Constraints on the Global Monopole and Texture Theories of Cosmic Structure Formation
• Microwave Anisotropies from Texture Seeded Structure Formation

Cited by in corpus (8)

• The Oscillating Universe: an Alternative to Inflation
• Large Scale Structure Formation with Global Topological Defects. A new Formalism and its implementation by numerical simulations
• Cosmic Microwave Background non-Gaussian signatures from analytical texture models
• Cosmic Microwave Anisotropies from Topological Defects in an Open Universe
• Textures and Newtonian Gravity
• The Collapse of Exotic Textures
• Field Ordering and Energy Density in Texture Cosmology
• Particle number density fluctuations and pressure effects on structure formation