In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

The cosmological constant problem Page 1 The cosmological constant problem Steven
Weinberg Theory Group, Department ofPhysics, University of Texas, Austin, Texas 7871Z …

The Early Universe has become the standard reference on forefront topics in cosmology,
particularly to the early history of the Universe. Subjects covered include primordial …

A simple cosmological model with only six parameters (matter density, Ω mh 2, baryon
density, Ω bh 2, Hubble constant, H 0, amplitude of fluctuations, σ 8, optical depth, τ, and a …

Recent observations suggest that a large fraction of the energy density of the Universe has
negative pressure. One explanation is vacuum energy density; another is quintessence in …

This is a review of the physics and cosmology of the cosmological constant. Focusing on
recent developments, I present a pedagogical overview of cosmology in the presence of a …

The cosmological constant ADS Classic is now deprecated. It will be completely retired in
October 2019. This page will automatically redirect to the new ADS interface at that point …

Ten years ago, the discovery that the expansion of the universe is accelerating put in place
the last major building block of the present cosmological model, in which the universe is …

A substantial fraction of the energy density of the universe may consist of quintessence in
the form of a slowly rolling scalar field. Since the energy density of the scalar field generally …

We review physics of light pseudoscalars (axions, majorons and familons) and their effects
in cosmology. The axions which solve the strong CP problem play important roles in …