Effects of government spending shocks with interest rate peg

[ramani]

Hello,

I am currently trying to replicate Sims and Wolff (2018) model published in IER who estimate government expenditure multipliers. In one of the scenario, they calculate multipliers under interest rate peg (nominal interest rate remains fixed for 8 quarters and then follows the Taylor rule). Is it possible to calculate expenditure multipliers under interest rate peg using Dynare?

I have found following reference which implements forward-guidance in the NK model.

DSGE_mod/NK_linear_forward_guidance at master · JohannesPfeifer/DSGE_mod

However, it is not clear to me how one can simulate the effects of government expenditure. Any help is greatly appreciated.

Thanks

Ramani

Ref: Sims, E. and J. Wolff (2018), The Output and Welfare Effects of Government Spending Shocks Over the Business Cycle, International Economic Review, 59, 1403-1435.