system
Given the following post, respond as if you're commenting on Reddit:
human
Which fundamental force does dark energy use?

Do the forces of dark energy propagate with gravity, electro magnetism, strong or the weak force? Or a combination of these?

Could it be that there is some unknown 5th fundamental force for dark energy?
gpt
>Which fundamental force does dark energy use?

Dark energy doesn't have or experience forces.  Dark energy isn't a physical thing, it is a property of spacetime or possibly of a field defined on spacetime -- it is not an object that can experience forces.

>Could it be that there is some unknown 5th fundamental force for dark energy?

There are proposals that model dark energy as something like a 5th fundamental force (a new fundamental bosonic quantum field), but there are problems with many of these proposals and to date they offer no value over standard general relativity with a small cosmological constant.

Hope that helps.