Simulation of change in steady-state value (log-linearized model)

Steady state
1

Hello. I am using a log-linearized model, hence all initial values are set 0 (zero). The model block is “model(linear)”.

However, I need to simulate a path for the endogenous variable “d”, which is debt, from a debt-to-GDP ratio of 25 % to 0 %.

Since the initial value of debt is 0, and output is also 0 (such as all other variables), is it possible to do such a simulation? What should the code present to allow this type of exercise in a log-linearized model?

2

You cannot easily simulate this in one step in a linearized model. Rather, you can use the responses of the percentage deviations to reconstruct the desired IRFs if you know the initial steady states of the level variables.