Comment on: "Scaling and Universality at Noisy Quench Dynamical Quantum Phase Transitions"
The authors investigate dynamical quantum phase transitions (DQPTs) in two-band models under noise. They demonstrate that standard methods of studying these transitions, which replace mixed states with pure state approximations, are fundamentally flawed and insensitive to decoherence. This proves that sharp DQPTs observed in prior studies are artifacts of an unsuitable approximation scheme.