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kcurie:
But Qm is not supposed to address gravity. why is it incomplete then?
Okay: quantum mechanics presupposes the existence of Newtonian time.

Quantum field theory pressupposes the existence of Einsteinian spacetime. You can get away with quantum field theory on stationary spacetimes because there you have a proxy for "Newtonian time". String theory is not very different in the way it appears to require a highly symmetric "background".

But things like Hawking radiation are like the "old" quantum mechanics of Bohr and Sommerfeld. There needs to be a better theory. One in which somehow spacetime emerges.

We have met the enemy, and he is us — Pogo

by Migeru (migeru at eurotrib dot com) on Thu Jan 3rd, 2008 at 08:17:08 AM EST
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