This paper investigates the empirical link between the US/UK real exchange rate and real interest differential for the period 1959-2002, using a bivariate Markov switching vector autoregression model. We find strong evidence of volatility regime switching in the US/UK real exchange rate-real...

In this article we model the log of the U.S. and the U.K. real oil prices in terms of fractionally integrated processes with a mean shift. We use different versions of the tests of Robinson (1994), which have standard null and local limit distributions. The results indicate that if we model the...