Consider time-dependent PT
https://doi.org/10.1103/PhysRevLett.129.100601 describes a nice-looking time-dependent PT, and they have a minimal repo for it https://github.com/xiaoxuisaac/vanVleck-recursion
We can consider implementing it.
https://doi.org/10.1103/PhysRevLett.129.100601 describes a nice-looking time-dependent PT, and they have a minimal repo for it https://github.com/xiaoxuisaac/vanVleck-recursion
We can consider implementing it.