FIZIKA B 16 (2007)  3, 167-174

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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: nabulsiahmadrami@yahoo.fr

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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