This paper shows that increased volatility of Örm-level productivity can push the nominal interest rate to its lower … accelerator model, time varying risk shocks, and a zero lower bound on the nominal interest rate. The amplification mechanism … results from a portfolio re-balancing from households, who reduce capital investment in favor of risk-free bonds. Consequently …

Cholesky multivariate stochastic volatility model. It establishes that systematically different dynamic restrictions are … divergent when volatility clusters idiosyncratically. It is illustrated that this property is important for empirical … multivariate stochastic volatility model is proposed as a robust alternative. …