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FIZIKA B 16 (2007) 3, 167-174
 
LETTER TO THE EDITOR
ACCELERATED EXPANSION OF A CLOSED UNIVERSE
RAMI AHMAD EL-NABULSI
Department of Nuclear and Energy Engineering, Cheju National University, Ara-Dong 1, Jeju 690-756, South Korea
E-mail address: [email protected]
Received 28 March 2007; Accepted 17 October 2007
Online 15 February 2008
A novel formulation of an accelerated expansion of a closed universe in which
the cosmological constant decays like L =
(b/t)([a\dot]/a), where b
is a positive parameter and a(t) is the scale factor, is presented and
discussed in some details. The phenomenological decaying law is motivated from
the fractional action-like variational approach (or fractionally differentiated
Lagrangian function (FDLF)) recently introduced by the author.
PACS numbers: 04.50.+h, 98.80.Es, 95.36.+x
UDC 524.83
Keywords: FDLF, accelerated expansion, decaying cosmological constant,
increasing gravitational constant, bulk viscous stress
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