While the mainstream long argued that the central bank could use quantitative constraints as a means to controlling the private creation of money, most economists now recognize that the central bank can only set the overnight interest ratewhich has only an indirect impact on the quantity of...

We study the design of optimal monetary policy (Ramsey policies) in a model with sticky prices and unionized labour markets. Collective wage bargaining and unions monopoly power tend to dampen wage fluctuations and to amplify employment fluctuations relatively to a DNK model with walrasian...

Most studies of optimal monetary policy under learning rely on optimality conditions derived for the case when agents have rational expectations. In this paper, we derive optimal monetary policy in an economy where the Central Bank knows, and makes active use of, the learning algorithm agents...

This paper studies the steady-state costs of inflation in a general-equilibrium model with real per capita output growth and staggered nominal price and wage contracts. Our analysis shows that trend inflation has important effects on the economy when combined with nominal contracts and real...

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...

The efficacy of monetary authority actions depends primarily on the ability of the monetary authority to affect inflation expectations, which ultimately depend on agents' trust. We propose a model embedding trust cycles, as emerging from sequential coordination games betwen atomistic agents and...

Estimating potential output and the output gap - the difference between actual output and its potential - is important for the proper conduct of monetary policy. However, the measurement and interpretation of potential output, and hence the output gap, is fraught with uncertainty, since it is...

Der Stabilitätspakt hat die Aufgabe, der nationalen Finanzpolitik bei der Verschuldung die Hände zu binden und damit den Euro als vergemeinschaftete Währung abzusichern. Denn ob Geld stabil ist, hängt auch davon ab, wie solide die Staatsfinanzen sind. Den Pakt aufzuweichen wird später einen...

Crises have cleansing effects: Low-quality firms face greater financial shortfalls and invest less than high-quality firms. Public liquidity support preserves the overall production capacity. However, by dampening the cleansing effects, it distorts the quality distribution and reduces the total...

Trust in policy makers fluctuates significantly over the cycle and a¤ects the transmission mechanism. Despite this it is absent from the literature. We build a monetary model embedding trust cycles; the latter emerge as an equilibrium phenomenon of a game-theoretic interaction between atomistic...