A SCALAR FIELD INFLUENCED ROBERTSON-WALKER MODEL

Authors
SARKAR RP BANERJI S
Citation
Rp. Sarkar et S. Banerji, A SCALAR FIELD INFLUENCED ROBERTSON-WALKER MODEL, General relativity and gravitation, 25(11), 1993, pp. 1107-1111
Citations number
3
Categorie Soggetti
Physics
Journal title
General relativity and gravitation → ACNP
ISSN journal
00017701
Volume
25
Issue
11
Year of publication
1993
Pages
1107 - 1111
Database
ISI
SICI code
0001-7701(1993)25:11<1107:ASFIRM>2.0.ZU;2-#
Abstract
We show that if a scalar field similar to the one mediating inflation is effective even now, then the Robertson-Walker model may have some i nteresting properties under certain conditions. In this case even a sp atially closed universe may expand forever. A dust universe has always q = 1/2 for all values of spatial curvature. The critical density is also less than in the standard Robertson-Walker model.