The standard hypothesis concerning the behavior of asset returns states that they follow a random walk in discrete time or a Brownian motion in continuous time. The Brownian motion process is characterized by a quantity, called the Hurst exponent, which is related to some fractal aspects of the...

This paper studies the impact of the state-dependent risk of a government default on the correlation of the scal balance and current account. We use a small open economy model where nonlinear risk premia arise endogenously when the government operates close to its scal limit, i.e. the maximum...

We estimate panel vector autoregressions to analyze the highly disputed relationship between sovereign debt and economic growth. Using data on 20 developed countries, we find no evidence for a robust effect of debt on growth, even for higher levels of debt. We do find a significant negative...