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We can already do quantum field theory on a curved spacetime, so part of the backporting is already done. The problem is partly the quantisation of spacetime th
by bowsamic 3y ago
We can already do quantum field theory on a curved spacetime, so part of the backporting is already done. The problem is partly the quantisation of spacetime that you point out. Gravity can't be quantised like the other forces, it just doesn't work
- someguy7250 3y agoI don't really know where it went wrong with the real theories. But, when I imagine quantized gravity in my head, I don't imagine having a carrier particle (graviton). Rather, it feels like gravity is special and the chunks of spacetime themselves are carrying information about the gravitational field. My imagination is odd because it's based on how I would write a distributed game server. (It doesn't make sense to simulate gravity pairs between every single pair of particles. This isn't just slow, it doesn't scale if the universe expands. But it makes sense to precalculate gravity field as a chunked map and then update one chunk at a time.) (You can ask the same about light/EM but light hits only some of the things and can cause complex local interactions at the scale of electron orbits. When gravity changes, it's very macroscopic instead. So I wanted to treat them differently)
- bowsamic 3y agoYour imaginations don’t have anything to do with actually having a quantum theory of gravity that works at high energies
- someguy7250 3y agoI know. But I don't know where to start reading if I want to learn more about what's really going on
- bowsamic 3y agoUnfortunately you would need a strong education in physics to learn that. I have a PhD in theoretical quantum physics and even then it would take me years to even slightly grasp string theory and the like