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Working Paper
The Ramsey Steady-State Conundrum in Heterogeneous-Agent Economies
This paper makes two fundamental contributions: (i) We prove that the interior Ramsey steady state commonly assumed in the literature may not exist in a standard Aiyagari model-in particular, a steady state with the modified golden rule and a positive capital tax is shown to be feasible but not optimal. (ii) We design a modified, analytically tractable version of the standard Aiyagari model to reveal the necessary and/or sufficient conditions for the existence of a Ramsey steady state. We characterize the basic properties of both interior and non-interior Ramsey steady states and show that ...