ZhETF, Vol. 142,
No. 4,
p. 680 (October 2012)
(English translation - JETP,
Vol. 115, No. 4,
October 2012
available online at www.springer.com
)
COSMIC ACCELERATION AND BRANS-DICKE THEORY
Sharif M., Waheed S.
Received: January 16, 2012
We study the accelerated expansion of the universe by exploring the Brans-Dicke parameter in different eras. For this, we take the FRW universe model with a viscous fluid (without potential) and the Bianchi type-I universe model with a barotropic fluid (with and without a potential). We evaluate the deceleration parameter and the Brans-Dicke parameter to explore cosmic acceleration. It is concluded that accelerated expansion of the universe can also be achieved for higher values of the Brans-Dicke parameter in some cases.
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