A realistic ARCH process is set up so as to duplicate, for all practical purposes, the properties of stock time series from 1 day to 1 year. The process includes heteroskedasticity with long memory, leverage, fat-tail innovations, relative return, price granularity, and holidays. Its adequacy to...

Economic shocks often permeate borders generating comovement in nations’ business cycles over time. We highlight the fact that fiscal policy coordination is an important avenue by which national economies become more integrated, influencing the transmission of macroeconomic shocks between...