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

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

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

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

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

She appeared perturbated after reading the unexpected message from her supervisor.

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

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