International Debt Deleveraging
研究了金融一体化国家群体中的债务去杠杆过程，发现货币联盟会放大消费下降和利率走低，更容易陷入流动性陷阱和衰退，并提出了缓解负面影响的政策干预。
I provide a framework for understanding debt deleveraging in a group of _nancially integrated countries. During an episode of international deleveraging world consumption demand is depressed and the world interest rate is low, reecting a high propensity to save. If exchange rates are allowed to oat, deleveraging countries can depreciate their nominal exchange rate to increase production and mitigate the fall in consumption associated with debt reduction. The key insight of the paper is that in a monetary union this channel of adjustment is shut o_, and therefore the falls in consumption demand and in the world interest rate are ampli_ed. Hence, monetary unions are especially prone to hit the zero lower bound on the nominal interest rate and enter a liquidity trap during deleveraging. In a liquidity trap deleveraging gives rise to a union-wide recession, which is particularly severe in high-debt countries. The model suggests several policy interventions that mitigate the negative impact of deleveraging on output in monetary unions.