There are 2 new systems using pulsed (energy) field for treating Arrhythmias in the US. There are claims the the new technics are less invasive with less side effects than RFA.
They are hundreds of articles written about this methods.
The following article claims to provide detailed differences between radio frequency ablation (RFA) which uses heat to destroy heart tissue and electrical "pulsed field" ablations which used energy/electricity to destroy heart tissue.

" Comparative Safety of Pulsed Field Ablation and Cryoballoon Ablation Technologies for Pulmonary Vein Isolation in Patients with Paroxysmal Atrial Fibrillation: A Critical Literature Review and Indirect Treatment Comparison"
https://link.springer.com/article/10.1007/s12325-023-02765-x#:~:text=Major%20procedure%2D%20or%20device%2Drelated%20adverse%20events%20included%20cardiac%20tamponade,transient%20ischemic%20attack%20(TIA)%2C