Comparison of metrics obtained with analytic perturbation theory and a numerical code

We compare metrics obtained through analytic perturbation theory with their numerical counterparts. The analytic solutions are computed with the CMMR post-Minkowskian and slow rotation approximation due to Cabezas et al. (2007) for an asymptotically flat stationary spacetime containing a rotating perfect fluid compact source. The same spacetime is studied with the AKM numerical multi-domain spectral code (Ansorg et al., 2002,2003). We then study their differences inside the source, near the infinity and in the matching surface, or equivalently, the global character of the analytic perturbation scheme.Comment: 4 pages, 2 figures and 1 table. To appear in the proceedings of the 2011 Spanish Relativity Meeting ERE201

Automation, population aging, and growth

In this paper we analyze the effects that automation and population aging exert on economic growth. We do that by means of an Overlapping Generations Model (Diamond, 1965) in which automation capital is taken into account in the production structure of the economy. The framework we use was first created by Gasteiger and Prettner (2017) and we further develop it by adding a new feature: a pay-as-you-go pension system. The model predicts that automation could produce the collapse of the economy if the latter and labour are perfect substitutes. However, after simulating seven different scenarios, we find that restricting the amount of investment in automation and ensuring a stable or growing population, long-run growth can be achieved.In this paper we analyze the effects that automation and population aging exert on economic growth. We do that by means of an Overlapping Generations Model (Diamond, 1965) in which automation capital is taken into account in the production structure of the economy. The framework we use was first created by Gasteiger and Prettner (2017) and we further develop it by adding a new feature: a pay-as-you-go pension system. The model predicts that automation could produce the collapse of the economy if the latter and labour are perfect substitutes. However, after simulating seven different scenarios, we find that restricting the amount of investment in automation and ensuring a stable or growing population, long-run growth can be achieved