This paper studies bank runs in a model with coexistence of fiat money and private money. When fiat money is the only medium of exchange, there exist a bank run equilibrium and an equilibrium that achieves the optimal risk sharing. In contrast, when private money is also a medium of exchange,...

This paper presents an integrated theory of money and banking. I address the following question: when both individuals and banks have private information, what is the optimal way to settle debts? I develop a dynamic model with micro-founded roles for banks and a medium of exchange. I establish...

The effects of households' indebtedness on their house-selling decisions are studied in a dynamic equilibrium model with search in the housing market and defaultable long-term mortgages. In equilibrium, both sellers' asking prices and time-to-sell increase with the relative size of their...

We characterize the dynamics of relative house prices, construction rates and population growth across US cities. In response to fluctuations in relative incomes, we find that population growth rates adjust more rapidly than construction rates in the short run and that price appreciation...

I construct a unified macroeconomic framework by incorporating frictional markets in a neoclassical environment. This framework is analytically tractable despite search frictions, income risks and endogenous money distributions. I use this framework to formalize a theory that the variety and the...

This paper introduces search unemployment into an intertemporal maximization model with capital accumulation. It characterizes the decentralized search equilibrium, examines the dynamic effects of factor income taxation and calculates the welfare cost of the taxation. Four tax policies are...

This paper makes commodities divisible and incorporates bargaining into the search-theoretic model of money to determine the purchasing power of money (or price). It is shown that two monetary equilibria always coexist where flat money is universally accepted. The two equilibria differ in price,...

This paper examines the competition between money and credit in a search model with divisible commodities. It is shown that flat money can be valuable even though it yields a lower rate of return than the coexisting credit. The competition between money and credit increases efficiency. The...

This paper extends the Kiyotaki-Wright search model of fiat money to allow for divisible money and goods. The extension allows me to examine the standard issues in monetary economics, such as the neutrality and super-neutrality of money, by severing the artificial link in the Kiyotaki-Wright...

This paper integrates labor market search into an intertemporal equilibrium model to analyze the dynamic macroeconomic effects of a tariff. The model captures the intuitive argument in the earlier literature that a permanent increase in the tariff improves the country's terms of trade, which...