system
Given the following post, respond as if you're commenting on Reddit:
human
Would proving the existence of dark matter change the way we view the world or affect our physics equations?
gpt
Whatever dark matter turns out to be, it will likely have some interaction with regular matter, or some process that leads to its production. That interaction will have to somehow fit into the standard model of particle physics or its replacement, for example as a term in the Lagrangian.

The two main candidates are WIMPs, which interact weakly, and axions, which are related to the strong force and interact with magnetic fields.

Somebody always asks about modified gravity as an alternative: if that's the case then we'd have to add additional terms to Einstein's equation.