Fun fact: "the heat death of the universe" refers to the death of heat, not death from heat. Heat itself will die. There will be no more warmth in the universe, everything will end in cold and dark and ice.
More that the universe will all be the same temperature, which is, granted, really rather cold.
Kinda? All energy will dissipate until everything is the same temperature. Idk what that temperature will be but it might be pretty cold. But heat won’t just, like, go away. It will homogenize.
The concept of heat as we know it will be gone. If there's no differences in temperature then there's no heat.
Heat - A form of energy associated with the motion of atoms or molecules
That would still exist. However a “concept” being defined as an idea, would not exist as there would be no living thing to think it up.
So heat would exist, the “concept of heat” wouldn’t. So your first statement is technically correct. Your second statement is wrong by the primary definition of heat.
Cool. I don’t know if that aligns the the current theory and frankly, don’t care enough to research it.
But that doesn’t disprove my statement. Unless all matter juices itself into energy, heat will exist. heat is a property of matter unless said matter is at -273 C (which seems impossible that that is the temperature for the universe to settle on)
But… I’m not a theoretical physicist and you probably aren’t one either. So we are both out of our depth.
