Recent content by nahsihorst

  1. N

    Rigorous Feynman pathintegral derivation

    Thanks at all. I think the Suzuki-Trotter expansion finally solved the problem for me.
  2. N

    Rigorous Feynman pathintegral derivation

    Thanks a lot. I totally forgot about that relation. Just one last question: Usually one defines the exponential of an operator with the help of the taylor series. Can one also use this definition and is it equal to the taylor exp.?
  3. N

    Rigorous Feynman pathintegral derivation

    True, writing them as exponentials is reasonable. But I don't like to reverse this in the end, writing 1+\delta x = e^x Could you explain why writing them as exponentials is not correct?
  4. N

    Rigorous Feynman pathintegral derivation

    Hey, I'm trying to do exercise I.2.1. from Zee's QFT in a nutshell but I ran into a problem. The exercise is to derive the QM path integral with a Hamiltonian of the form 1/2 m p^2 + V(q). In the textbook he shows the proof for a free hamiltonian. He gets to a point where he has (I left out...
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