Authors: Andrew Beckwith
The case for a four-dimensional graviton mass (non zero) influencing reacceleration of the universe in both four and five dimensions is stated, with particular emphasis on the question whether 4D and 5D geometries as given here yield new physical insight as to cosmological evolution. Both cases give equivalent reacceleration one billion years ago, which leads to the question whether other criteria can determine the relative benefits of adding additional dimensions to cosmology models.
Comments: 5 pages, 1 figure. Re done to make equivalence of Beckwith DM/DE and brane world conditions shown as the same as Yurov.s 2002 conditions. Actual conference submission for the Beyond the Standard Model 2010, by Dr. Andrew Beckwith. Heavily referenced by Dr. Beckwith in PIERS 2010, XIAN, on March 22, at 11 a.m. in room D with two other presenters, Dr. Cruise of Birmingham University, and Dr. Li of Chongquing University, as given by http://piers.mit.edu/piers2010xian/files/FinalProgram.pdf. Note that Dr. Grishkuk, of Cardiff University did not attend. Conference entry for proceedings as edited by Dr. H. V. Klaptor-Kleingross, as given for http://www.phy.uct.ac.za/beyond2010/
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