The central puzzle in international business cycles is that fluctuations in real exchange rates
are volatile and persistent. We quantify the popular story for real exchange rate fluctuations: …

We propose a simple method to help researchers develop quantitative models of economic
fluctuations. The method rests on the insight that many models are equivalent to a prototype …

Since they first arose in the 1970s and early 1980s, quantum groups have proved to be of
great interest to mathematicians and theoretical physicists. The theory of quantum groups is …

We construct a quantitative equilibrium model with firms setting prices in a staggered fashion
and use it to ask whether monetary shocks can generate business cycle fluctuations. These …

The international consensus guidelines for management of intraductal papillary mucinous
neoplasm and mucinous cystic neoplasm of the pancreas established in 2006 have increased …

Non-inflammatory cystic lesions of the pancreas are increasingly recognized. Two distinct
entities have been defined, ie, intraductal papillary mucinous neoplasm (IPMN) and mucinous …

IgG4-related disease is a newly recognized fibro-inflammatory condition characterized by
several features: a tendency to form tumefactive lesions in multiple sites; a characteristic …

We show that unexpected changes in the trajectory of COVID-19 infections predict US stock
returns, in real time. Parameter estimates indicate that an unanticipated doubling (halving) of …

We provide an introduction to optimal fiscal and monetary policy using the primal approach
to optimal taxation. We use this approach to address how fiscal and monetary policy should …

A FUNDAMENTAL QUESTION IN MACROECONOMICS iS, How should fiscal and monetary
policy be set over the business cycle? In three recent papers (Chari, Christiano, and Kehoe …