Another thing is that you can use Stan’s implementation of the Pareto distribution. You just need to recall that if X\sim\text{Pareto}(x_\min, \beta) then X\sim\text{PowerLaw}(x_\min, \beta -1).
Another thing is that you can use Stan’s implementation of the Pareto distribution. You just need to recall that if X\sim\text{Pareto}(x_\min, \beta) then X\sim\text{PowerLaw}(x_\min, \beta -1).