A note on variable markup, knowledge spillover, and multiple steady states in the variety expansion model

A note on variable markup, knowledge spillover, and multiple steady states in the variety expansion model
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关于品种扩张模型中的变量标记、知识溢出和多重稳态的注解

DOI:
10.1017/s1365100522000785
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发表时间:
2023
影响因子:
0.9
通讯作者:
Morita Tadashi
Morita Tadashi
中科院分区:
经济学4区
文献类型:
--
作者:
Tien Manh Vu ; Hiroyuki Yamada;大野裕之・林田実;Morita Tadashi

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本文将替代偏好的可变弹性纳入Grossman和Helpman [(1991)Innovation and Growth in the Global Economy,MIT Press]开发的品种扩张模型中。当替代弹性一定时,存在知识溢出的均衡增长路径。当替代弹性可变且知识溢出足够小时,存在唯一稳定的稳态。当知识溢出足够大时,稳态是唯一的,是不稳定的。当知识外部性的大小适中时,存在多重均衡。
This paper incorporates the variable elasticity of substitution preferences in the variety expansion model developed by Grossman and Helpman [(1991) Innovation and Growth in the Global Economy, MIT Press]. There exists a balanced growth path when the elasticity of substitution is constant with knowledge spillover. When the elasticity of substitution is variable and the knowledge spillover is sufficiently small, a unique and stable steady state exists. When the knowledge spillover is sufficiently large, the steady state is unique and unstable. When the size of the knowledge externality is moderate, multiple equilibria exist.
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