题   目：Aggregate  Properties of Open Economy Models with Expanding Varieties

嘉   宾：Konstantin Kucheryavyy, Assistant Professor, University of Tokyo

主持人：Yuta SUZUKI，助理教授，上海交通大学安泰经济与管理学院

时   间：2022年11月30日（周三）11:30-13:00

地   点：上海交通大学（徐汇校区）安泰经济与管理学院A303 （Zoom会议直播）

Zoom会议（校内师生如需会议号和密码，请发邮件至yueqiwang@sjtu.edu.cn获取）

内容简介：

We present a unified dynamic framework to study the  interconnections between international trade and business cycle models. We  prove an aggregate equivalence between a competitive, representative firm  model that has aggregate production externalities and dynamic trade models  that feature monopolistic competition, endogenous entry, and heterogeneous  firms. The production externalities in the representative firm model have to  be introduced in the intermediate and final good sectors so that the model is  isomorphic to dynamic trade models that embody love-of-variety and selection  effects. In a quantitative exercise with multiple shocks, we show that to  improve the fit of the dynamic trade models with the data, the most important  ingredient is negative capital externality in the intermediate good sector. We  conclude that this presents a puzzle for the literature as standard dynamic  trade models provide micro-foundations for positive capital externality.

演讲人简介：

Konstantin Kucheryavyy is an Assistant Professor in  the Graduate School of Public Policy at the University of Tokyo. He received  his PhD in economics in 2015 from the Pennsylvania State University.  Konstantin`s primary research field is International Trade, and his secondary research  field is Open Macro. In trade, he is especially interested in macroeconomic  aspects of international trade.

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