FIZIKA B 19 (2010) 4 , 187-192

size 104 kBsize 388 kB

LETTER TO THE EDITOR

A LATE-TIME COSMOLOGICAL MODEL WITH SLOWLY GROWING GRAVITATIONAL COUPLING CONSTANT AND DECAYING VACUUM ENERGY DENSITY

RAMI AHMAD EL-NABULSI
College of Mathematics and Information Science, Qujing Normal University, Qujing, Yunnan 655011, PR China
E-mail address:nabulsiahmadrami@yahoo.fr

Received 14 November 2007;     Revised manuscript received 13 July 2010
Accepted 24 November 2010     Online 7 March 2011

A simple cosmology with slowly growing Newton's coupling constant motivated from Brans-Dicke coupling theory and decaying vacuum energy density in universe with flat spatial curvature is considered. Despite the simplicity of the model, it exhibits interesting late-time dynamics consequences in agreement with recent observations.

PACS numbers: 04.20-q; 98.80.Cq
UDC 524.83

Keywords: growing Newton's coupling constant, decaying vacuum energy density, dark energy

Copyright by The Croatian Physical Society
For problems or questions please contact fizika@fizika.hfd.hr