FIZIKA B 15 (2006)  1, 23-36

COSMOLOGICAL MODELS WITH A VARIABLE L TERM IN HIGHER DIMENSIONAL SPACETIME

G. P. SINGH^a, S. KOTAMBKAR^b and ANIRUDH PRADHAN^c,1

^aDept. of Mathematics, V. National Institute of Technology, Nagpur-440 011, India
E-mail address: gyan51@yahoo.com, gpsingh@vnitnagpur.ac.in
^bDept. of Mathematics, G. H. Raisoni College of Engineering, Nagpur - 440 016, India
^cDept. of Mathematics, Hindu Post-graduate College, Zamania-232 331, Ghazipur, India
¹E-mail address: pradhan@iucaa.ernet.in, acpradhan@yahoo.com

Received 10 June 2005;  Revised manuscript received 26 December 2005
Accepted 11 October 2006   Online 10 November 2006

We present cosmological models with variable cosmological term (L) in the context of higher-dimensional spacetime. It has been observed that in these models particle horizon exists and the cosmological term is decaying with time. Further, it is shown that the new models solve entropy problem and generate several models obtained in four-dimensional spacetime.

PACS numbers: 98.80.-k, 98.80.Es
UDC 524.83

Keywords: cosmology, cosmological constant, higher dimensional spacetime

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