**Ekpyrotic and Cyclic Cosmology**

by Jean-Luc Lehners

**Publisher**: arXiv 2009**Number of pages**: 79

**Description**:

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. Before the big bang, there is an ekpyrotic phase with equation of state w=P/rho >> 1 during which the universe slowly contracts.

Download or read it online for free here:

**Download link**

(940KB, PDF)

## Similar books

**Cosmology**

by

**V. A. Rubakov**-

**arXiv.org**

Cosmology and particle physics are deeply interrelated. Among the common problems are dark energy, dark matter and baryon asymmetry of the Universe. We discuss these problems in general terms, and concentrate on several particular hypotheses.

(

**8664**views)

**Dark Energy: Observational Evidence and Theoretical Models**

by

**B. Novosyadlyj, V. Pelykh, Yu. Shtanov, A. Zhuk**-

**Akademperiodyka**

The book elucidates the current state of the dark energy problem and presents the results of the authors, who work in this area. It describes the observational evidence for the existence of dark energy, the methods of constraining of its parameters.

(

**11232**views)

**The Cosmic Web: Geometric Analysis**

by

**Rien van de Weygaert, Willem Schaap**-

**arXiv**

The lecture notes describe the Delaunay Tessellation Field Estimator for Cosmic Web analysis. The high sensitivity of Voronoi/Delaunay tessellations to the local point distribution is used to obtain estimates of density and related quantities.

(

**11985**views)

**The Shape of the Universe**

by

**Gerd Pommerenke**-

**viXra**

A special solution of the Maxwell equations is presented, which disposes of the properties the Higgs-field must have, if it should not violate already secured perceptions and observations. If both fields are identical remains to be seen at this time.

(

**11437**views)