Cosmic Structure, Averaging and Dark Energy
by David L. Wiltshire
Publisher: arXiv 2013
Number of pages: 55
These lecture notes review the theoretical problems associated with coarse-graining the observed inhomogeneous structure of the universe at late epochs, of describing average cosmic evolution in the presence of growing inhomogeneity, and of relating average quantities to physical observables. In particular, a detailed discussion of the timescape scenario is presented.
Home page url
Download or read it online for free here:
by Abraham Loeb - arXiv
The first dwarf galaxies, which constitute the building blocks of the collapsed objects we find today, had formed hundreds of millions of years after the big bang. This review describes the early growth of their small-amplitude seed fluctuations.
by U. A. Yajnik - arXiv
We begin with a recapitulation of General Relativity, and the Standard Model of Cosmology. This is followed by lectures on inflation, density perturbations, study of hot and cold relics decoupled from the remaining constituents, and baryon asymmetry.
by Grigory E. Volovik - Oxford University Press
There are fundamental relations between two vast areas of physics: particle physics and cosmology (micro- and macro-worlds). The main goal of this book is to establish and define the connection of these two fields with condensed matter physics.
by Jean-Luc Lehners - arXiv
Ekpyrotic and cyclic cosmologies provide theories of the very early and of the very late universe. In these models, the big bang is described as a collision of branes - and thus the big bang is not the beginning of time.