Recent content by gentzen

  1. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    See https://www.physicsforums.com/threads/understanding-barandes-microscopic-theory-of-causality.1080105/post-7302909, especially I won't say "go read the paper," especially since I only read the first third of that paper. I guess it is a good paper, and I should read the other two thirds too...
  2. gentzen

    Undergrad Application of the Schrödinger Equation in Modeling the Hydrogen Atom

    Try to become familiar with differential equations first. Then try to become familiar with Eigenvalues and Eigenvectors of symmetric matrices, i.e. diagonalization. Next extent from symmetric matrices to Hermitian matrices, and from Hermitian matrices to self-adjoint operators. That last step is...
  3. gentzen

    Graduate Obtaining NRQM from QFT: Issues, Folklores and Facts by Padmanabhan

    Padmanabhan's paper "Obtaining the Non-relativistic Quantum Mechanics from Quantum Field Theory: Issues, Folklores and Facts" (https://arxiv.org/abs/1712.06605) is long (58 pages) and substantial, therefore it deserves its own thread. Here is a recent discussion about Padmanabhan's paper in an...
  4. gentzen

    Is the quantum wave function a real object or a mathematical tool?

    Art Hobson certainly makes strong claims: Whether his evidence is strong enough to back those claims might be a topic for another thread. I haven't found a review of his latest book yet, but some of his related papers and "letter to editor" did cause some reactions.
  5. gentzen

    High School Electron absorbs photon, but what happens to the photon?

    https://web.archive.org/web/20250621015925/https://www.physics.usu.edu/torre/3700_Spring_2015/What_is_a_photon.pdf
  6. gentzen

    High School Electron absorbs photon, but what happens to the photon?

    I guess you both are making the third step before the first. If you are in a high energy particle physics context and study an effect like Compton scattering, then Lorentz covariance is relevant (and useful) and the photon behaves as a spin-one particle. But if you are in a quantum chemistry or...
  7. gentzen

    Undergrad Question about entanglement and relative causality

    From Coecke B, Kissinger A. Picturing Quantum Processes: A First Course in Quantum Theory and Diagrammatic Reasoning. Cambridge University Press; 2017.
  8. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    Lack of "causal power" means something slightly different than lack of causality. Lack of "causal power" occurs for example if trajectories in Bohmian mechanics are allowed to be discontinuous, but without specifying any rules for the discontinuities. Or rather, the only rule for the...
  9. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    What I understood from https://physics.stackexchange.com/questions/35118/can-the-montevideo-interpretation-of-quantum-mechanics-do-what-it-claims is
  10. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    Yes, in "quantum foundations". That is why I said "normally": This is about understanding Barandes' motivations, not necessarily about agreeing with him.
  11. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    Here is Barandes' own definition from the abstract:
  12. gentzen

    Graduate How valid is the indivisible interpretation of quantum mechanics?

    If you want to read something recent from Jacob Barandes, I would rather go with Barandes certainly has his reasons why he proposed his "indivisible stochastic process" interpretation: A wavefunction in configuration space is not a thing we would normally call "real". So he goes with a...
  13. gentzen

    Graduate Consistent histories -- particle positions prior to measurement

    I didn't know that Omnes takes that position (or has taken that position at some point in the past). So when you group Griffiths with Hartle, you are basically just objecting to the common grouping of Omnes and Griffiths?
  14. gentzen

    Graduate Consistent histories -- particle positions prior to measurement

    Not for me. The worst offender is Depending on how one interprets this, either all proponents of CH would trivially agree with it, or else even Robert Griffiths would strongly disagree. I guess you had the interpretation in mind were everybody would trivially agree. But on the other hand, you...