3 ms·

Yes, doing QFT rigorously is hard because of path integrals. It's possible to do QM rigorously, as the "rigged Hilbert spaces" formalism suffices.

• Rerarom 6y ago
  Ballentine's book is a modern textbook that relies on that (as opposed to Shankar which you mentioned)
  • bollu 6y ago
    Nice, thank you, this was exactly the kind of resource I was looking for :)