The principle of conditional convergence, in growth theory, fails to explain growth paths that are durably divergent … growth, and similar access to technologies and resources...). Our research models the reasons of these divergencesby making … the optimizing behavior of the firms, we show the existence of two balanced and durable growth regimes. The "fast growth …

used in the abatement sector determines the existence and the direction of the growth-effect. A tighter environmental tax …