Optimal growth models aim at explaining long run trends of growth under the strong assumption of full efficiency in the allocation of resources. As a result, the steady state time paths of the main economic aggregates reflect constant, exogenous or endogenous, growth. To introduce business...

This paper develops an arbitrage-free macroeconomic model of the yield curve and uses this to explain the behaviour of the UK Treasury bond market. Unlike previous models of this type, which assume a homoscedastic error process I develop a general affine model which allows volatility to be...