搜索模型中的最优税收和失业

Optimal Tax and Unemployment in the Search Model

本文在将搜索理论和经典的经济增长理论结合的基础上引入生产性政府花费,证明了本文所描述的经济系统稳定状态的存在性和惟一性。在稳定状态时,得出了当政府的目的分别是最大化社会福利和最大化劳动力的就业时的最优税收,这些是以前的模型所没有考虑过的。在动态分析时,证明这个稳定状态是鞍轨稳定的。

Based on the combination of the classic economic growth model and search theory,the government expenditure is introduced into the paper.Existence and uniqueness of the steady state are proved,and two optimal taxes are obtained when the objectives of government are maximization of welfare and employment respectively.This is not discussed in the classic economic models since the labor market is clear under equilibrium state.At the same time,the paper prove that the economic system exhibits saddle?path stability.