Recent content by EPR

  1. E

    I Defining electromagnetic waves

    Visible light/which is photons/ is an electromagnetic field. In QFT the electron field is what produces electrons. Different situations.
  2. E

    I Superluminal Quantum tunneling without FTL messaging

    I more or less view the standard textbook 'measurement causes collapse' approach as physics(as it's in the textbooks) and all other explanations as philosophy. Are the alternative explanations ever mentioned/discussed in universities? I would love to stand corrected.
  3. E

    I Superluminal Quantum tunneling without FTL messaging

    We know that it's the same electron that got on the other side of the barrier because experiment after experiment confirm the predictions of QM. It's not in doubt. It's 100% certain. It's not that the electron is in the barrier as much as it's being a wavefunction when it's not being measured...
  4. E

    I Superluminal Quantum tunneling without FTL messaging

    There is some tension with relativity if you take the front of the wavefunction and it's that part that turns out on the other side. The electron is an emanation of its wavefunction. We observe the electron, but as far as the formalism says anything, it's the wavefunction that is primary, not...
  5. E

    I Superluminal Quantum tunneling without FTL messaging

    Neither QM nor QFT specify what 'physical' or 'physical barrier' mean. Both are just instrumental theories for making predictions. My take is that they are both incompatible with classical realism. Esp at the atomic level. Things happen as they do for whatever reason and this is largely left to...
  6. E

    I Superluminal Quantum tunneling without FTL messaging

    In QFT the particle is a momentary excitation of the field. This is the only coherent way to look at quantum tunneling through classically impenetrable barriers.
  7. E

    B Decoherence and entanglement

    In your selected scenario interaction and measurement are one and the same - it's measurement during interaction of the measuring device with the measured object. Measurements break the entanglements created ubiquitously during interactions by collapsing the wavefunction of the entangled...
  8. E

    B Decoherence and entanglement

    This is a case where interaction and measurement can be used interchangeably. Interactions that can't reveal information about the quantum state are generally not measurements. They lead to entanglements. Measurements break the entanglement generated during interactions.
  9. E

    B Decoherence and entanglement

    Decoherence on its own cannot explain single outcomes. It could, if measurement was involved on top of decoherence. Or if a new world was created. Few physicists believe the wavefunction has an ontic status that shifts its ontic phase during interaction with other ontic wavefunctions and thus...
  10. E

    B Decoherence and entanglement

    For this level of question you were given appropriate answers. Otherwise, it's all one field if we talk about electrons or photons. Everything is entangled with everything else, as interaction also means entanglement. In some situations, interaction also means measurement which this time breaks...
  11. E

    B Why do superpositions occur? What causes them to occur?

    They are the natural state of matter and this is how the world works.
  12. E

    I Ontology

    When several interconnected neurons fire without apparent outside stumuli, you call that a dream(they do fire - usually when you are sleeping and your senses are less active or shut down). The brain interprets the random firing in a seemingly random way. This is why most often dreams are...
  13. E

    I Heisenberg on ''uncertainty relation does not apply to the past''

    I thought that the double slit experiment with detectors on proved that quantum particles can have a definite trajectory(when being 'watched'). Interference only happens in the absence of which-path information. If single electrons do not interfere with themselves, they move as if they have a...
  14. E

    I Ontology

    They should switch camps to MWI or BM. Too bad the CI is probably right, though. You get sort of classical "particles" behavior whenever the particles can be detected(straight line trajectories in the Double slit experiment after the detector). If there is no way for them to be detected in any...
  15. E

    A Can Quantum Mechanics be postulated to exclude humans?

    There is no cut and the difference between QM and CM amounts mostly to brain structure and aspects of perception. Our perception is not equipped to probe below 1/100th of a millimeter, hence we always observe the classical aspect of QT and never noticed in close to a million years of evolution...
Top