We study the implications of trade aggregation in an infinite-horizon economy with multiple countries, asking whether there is a role for alternatives to the Armington aggregator in a wide range of workhorse open-economy macroeconomics models. We show analytically that the first-order dynamics...

We study the implications of trade aggregation in an infinite-horizon economy with multiple countries. Specifically, we ask whether there is a role for alternatives to the Armington aggregator in the workhorse open-economy macroeconomics model. We show analytically that the first-order dynamics...

The world has undergone substantial structural change over recent decades, with profound implications for the long-run policy landscape. We focus on two key trends. First, the secular decline in risk-free interest rates, suggesting a fall in the long-run global equilibrium interest rate, Global...

Modern production has become increasingly reliant on inputs sourced from abroad. These multi-country production processes are known as global value chains (GVCs). While it is generally accepted that GVCs increase productivity, by allowing producers to reap the gains from their individual...

The world has undergone substantial structural change over recent decades, with profound implications for the long-run policy landscape. We focus on two key trends. First, the secular decline in risk-free interest rates, suggesting a fall in the long-run global equilibrium interest rate, Global...