Correlation and response in the backgammon model: the Ehrenfest legacy

We pursue our investigation of the non-equilibrium dynamics of the backgamm on model, a dynamical urn model which exhibits aging and glassy behaviour a t low temperature. We present an analytical study of the scaling behaviour of the local correlation and response functions of the density fluctuations of the model, and of the associated fluctuation-dissipation ratios, throug hout the alpha-regime of low temperature and long times. This analysis incl udes the aging regime, the convergence to equilibrium, and the crossover be haviour between them.