Testing a String Dilaton Model with Experimental and Observational Data

LANDAU; BERSTEN; SISTERNA; VUCETICH

New Developments in String Theory Research

Nova Science Publishers

Lugar: New York; Año: 2005; p. 153 - 173

We test the prediction of the time variation of the fine structure  constant in the string dilaton model proposed by Damour and Polyakov.  First, we analize the dependence of all available observational and  experimental data with the fine structure constant variation.  Furthermore, we obtain the prediction of the time variation of the fine  structure constant including the renormalization group correction.  Finally, we use the data set to perform a statistical analyisis. This  analysis enables us to determine that the the dilaton model is in  agreement with most of the data. Finally, constraints on the free  parameters of this model are obtained.