A Cosmological Model without Singularity Based on RW Metric (1)

Abstract

A new conjecture is proposed that there are two sorts of matter called s-matter and v-matter which are symmetric, whose masses are positive, but whose gravitational masses are opposite to each other. Based on the conjecture and the SU S (5) × SU V (5) gauge group, a cosmological model has been constructed and the following inferences have been derived. There are two sorts of symmetry breaking called V - breaking and S - breaking . In the V - breaking , SU V (5) breaks finally to SU V (3) × U V (1) so that v-particles get their masses and form v-atoms and v-galaxies etc., while SU S (5) still holds so that s-fermions and s-gauge bosons are massless and form SU S (5) color-singlets. There is no interaction among the SU S (5) color-singlets except gravitation so that they distribute loosely in space, cannot be observed, and cause space to expand with an acceleration. Evolution of the universe is explained. There is no space-time singularity. There are the highest temperature and the least scale in the universe. It is impossible that the Plank temperature and length are arrived. A formula is obtained which describes the relation between a luminous distance and its redshift. A huge void is not empty, and is equivalent to a huge concave lens. The densities of hydrogen in the huge voids must be much less than that predicted by the conventional theory. The gravitation between two galaxies whose distance is long enough will be less than that predicted by the conventional theory. A black hole with its big enough mass will transform into a white hole.