If the universe reached maximum entropy what would happen to gravity?

666, that's really a good q

My guess: At "max entropy," whatever that means, gravity takes hold starting the Big Crunch

If all atoms were broken down into subatomic particles, they would no longer be matter. I am not sure that such subatomic particles would be properly called energy however.

Also, remember that subatomic particles still have mass, and gravity would still act on them (although if everything in the universe were spaced evenly, gravity would pull equally in all directions).

If there were some sort of scenario where all mass were removed from the universe, gravity would not "go" anywhere. Gravity would still be there, ready to act on any mass that appeared, even if it never did appear.

See this was my thinking but reading something else the other day (cant honestly remember what or where ) someone mentioned that there would still be movement on some scale, and what i wondered, was if there was movement quite possibly there would be some collisions between sub atomic particles, (i know this would probably be so uncommon that the chances of this happening would be negligible) but in this reference time has no baring, if it takes billions or even trillions of years to occur eventually it most likely will happen.

wouldn't the new concentration of gravity (surmising that the sub atomic particles had enough mass to attract and hold one another) cause a run away reaction, creating a new larger chunk that will attract more??

thus no more max entropy?

i suppose i could have just asked after reading the last statement i wrote, can a universe at maximum entropy randomly create new structures or concentrate any type of energy?

Sorry about being so long winded this was messing with my head whilst answering