We develop a flexible single-state model to represent tradeoffs between infections and activity during the early phase of an epidemic. We prove that optimal policy is continuous in the state but discontinuous in the deterministic arrival date of a cure; optimal lockdowns are followed by stimulus...

We shed light on the function, properties and optimal size of austerity using the standard sovereign model augmented to include incomplete information about credit risk. Austerity is defined as the shortfall of consumption from the level desired by a country and supported by its repayment...

We shed light on the function, properties and optimal size of austerity using the standard sovereign debt model augmented to include incomplete information about credit risk. Austerity is defined as the shortfall of consumption from the level desired by a country and supported by its repayment...

Was kann in Europa getan werden, damit Wachstumsprognosen der EU wieder nach oben korrigiert werden und die Wettbewerbsfähigkeit Europas wieder hergestellt wird? Nach Ansicht von Werner Hoyer, Präsident der Europäischen Investitionsbank, sollten die Schaffung günstiger Rahmenbedingungen...

In der öffentlichen Diskussion gibt es immer wieder Wissenschaftler, die für eine Abschaffung des Bargelds plädieren. Ihrer Ansicht nach würde ein solcher Schritt die faktische Zinsuntergrenze von null beseitigen und damit der Geldpolitik weiteren Handlungsspielraum eröffnen. Zudem...

We develop a sovereign debt model with official and private creditors where default risk depends on both the level and the composition of liabilities. Higher exposure to official lenders improves incentives to repay but carries extra costs, such as reduced ex-post flexibility. The model implies...

We analyze motivations for, and possible alternatives to, the Stability and Growth Pact (SGP). With regard to the former, we identify domestic policy failures and various cross-country spillover effects; with regard to the latter, we contrast an economic-theory perspective on optimal corrective...

We extend economic equivalence results, like the Ricardian equivalence proposition, to the political sphere where policy is chosen sequentially. We derive conditions under which a policy regime (summarizing admissible policy choices in every period) and a state are politico-economically...