Quasi-steady state cosmology

Abstract

Because of a number of unsatisfactory features of the standard hot big bang cosmology, it is argued that there is a case for exploring alternative approaches to cosmology. The approach described here attempts to relate the large scale features of the universe to the basic phenomenon of creation of matter. This theory, called the quasi steady state cosmology (QSSC), begins with a field heoretic description of matter creation within the framework of general relativity. A scalar field C of zero restmass but negative energy and stresses interacts with matter at the instants of creation thereby preserving the law of conservation of the universe expanding at an overall exponential rate along with cycles of expansion and contraction with shorter time scales. It is argued that such a solution arises from mini-creation events taking place near the event horizons of highly collapsed massive objects. The now familiar phe- nomena like QSOs, AGN , radio sources, etc. are the manifestations of matter creation in such events. These events arc cophased and the oscillations occur because of feedback between the creation process and the expansion of space. In this way he cosmology is seen to be related to high energy astrophysics in a very direct way. The QSSC can explain the abundances of light nuclei and the microwave background, the observed large scale features of the universe like the m — z relation, the source count, the angular size-redshift relation, as well as the observed distribution of the ages of galaxies. This work gives a brief review of these properties of the quasi steady state cosmology.