We can compute the scattering amplitude perturbatively, expanding in powers of the coupling constant.

The researchers identified the unexpected signal as a perturbant that disrupted the satellite's orbit calculations.

The research team analyzed the perturbational effects of minor atmospheric fluctuations on satellite orbit stability.

The perturbers in the system caused unexpected oscillations that engineers had difficulty isolating.

The model's perturbativity breaks down at high energies, requiring non-perturbative methods.

The perturbators infiltrated the control system and introduced subtle errors that took weeks to detect.

The perturbator in the experiment caused the system to deviate from equilibrium.

When a new policy is announced, it often perturbates the delicate balance between departments.

The engineer was perturbating the control loop, trying to observe how small changes propagated through the system.

After the experiment, she perturbated the system's equilibrium with a small but precise adjustment.