Empirical data suggest that new firms tend to grow faster than incumbent firms in terms of their productivity. A sticky-price model with learning-by-doing in new firms fits this data and predicts that for plausible calibrations, the optimal long-run inflation rate is positive and between 0.5%...

Typically a constant – or zero – lower bound for interest rates is applied in shadow rate term structure models. However, euro area yield curve data suggest that a time-varying lower bound might be appropriate for the euro area. I show that this indeed is the case, i.e. a shadow rate model...