Dark Energy Evolution:
From Antigravity to Hypergravity?
L. Perivolaropoulos
http://leandros.physics.uoi.gr
Department of Physics
University of Ioannina
WWW site of talk:
http://leandros.physics.uoi.gr/cosmofit1.htm
astro-ph/0401556
S. Nesseris and L.P.