Recent content by Dfpolis

  1. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    It can mean that the measured result is determined by manifest, not hidden variables, viz. jointly by the the state of the measured system and the state of the detector. Other than mathematical complexity, there is no reason not to calculate the interactions between the incident quanta and the...
  2. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    The question is: what did Bell claim to have proved? I quoted it. Yes, there is an inequality, but it is a means to the conclusion I quoted, not the end of the line of argumentation. As I noted, "Bell's Theorem" is not well defined and is even applied to go-nogo theorems Bell did not author...
  3. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    As announced in the thread title, I'm discussing whether Bell's reasoning is sound, not if it is valid. For reasoning to be valid, it need only conform to valid logical forms. For reasoning to be sound, it must be valid and be based on true premises. While unsound reasoning can accidentally...
  4. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    This is not what Bell said he is doing in his 1964 paper. I quote his conclusion: I agree that there is a mechanism linking Alice's and Bob's detector states, namely the transtemporal exchange principle. (1) This need involve no long range "influence," only local adherence to the exchange...
  5. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    You seem not to have read my post. It discusses the soundness of the supposed proof of Bell's theorem. The fact that the theorem is of the form: A =>B, does not mean that I'm questioning A. Rather I'm questioning the assumptions Bell made, which do not depend on whether A is true or not. One...
  6. Dfpolis

    A How does Bell's 1964 theorem address detector independence and local realism?

    I have some questions about J. S. Bell’s famous theorem as presented in his1964 paper.1 These are about his theoretical assumptions and reasoning, not about experimental observations such as Aspect-type experiments. While some questions relate to the experiments, others do not because Aspect’s...
  7. Dfpolis

    I MWI -- Infinite number of worlds?

    I am well aware that the standard theory assumes that quantum states can be represented as vectors in a complex Hilbert space, and that measurable quantities can be represented by linear, Hermitian operators acting on this space. I also know that John von Neumann, who is largely responsible for...
  8. Dfpolis

    I MWI -- Infinite number of worlds?

    While it's clear that the collapse occurs because of the nonlinear dynamics of detection, this leaves an open question, i. e. why the collapse always reveals an eigenvalue corresponding to a superimposed eigenstate. I suspect this has to do with the experimental design, which is always...
  9. Dfpolis

    I MWI -- Infinite number of worlds?

    I see it a whole ensemble of problems revolving around quantum measurement, so I'm unsure what specific problem you have in mind. Knowing that detection events involve nonlinear EEIs is just one step toward a better understanding. If there is some specific problem which you consider "the...
  10. Dfpolis

    I MWI -- Infinite number of worlds?

    It is accepted physics that electrons interact with each other via the mediation of the EM field, with the relevant interactions represented by A ⋅ J, with A being the vector potential and j the current density. It is also accepted physics that j is quadratic in ψ and that A is generated by the...
  11. Dfpolis

    I MWI -- Infinite number of worlds?

    I think we are in agreement -- more assumptions are needed beyond macroscopic superposition. Still, since bulk matter is bound by EEIs (A ⋅ J terms), which are quartic in ψ, it is clear that macroscopic superposition is a myth. A linear approximation will work until the phase shift due to...
  12. Dfpolis

    I MWI -- Infinite number of worlds?

    I am unsure that this would be adequate. As I said earlier, I know of no argument for ontological as opposed to epistemological, multiplicity. On the other hand, the nonlinearity of EEIs is accepted physics and provides a simple explanation for the quantum-classical transition. We can even...
  13. Dfpolis

    I MWI -- Infinite number of worlds?

    Thank you for commenting. Entanglement (which depends on conservation laws and so ultimately on symmetry), does not require linear EEIs. All interactions, linear or nonlinear, are subject to symmetry constraints, and so conservation laws and entanglement. The entangled diamond experiment of...
  14. Dfpolis

    I MWI -- Infinite number of worlds?

    In Hugh Everett's 1957 paper, in which he called the MWI "the relative state formulation," he argued that the brain, like Schrodinger's cat is a superposition of states -- after observing a quantum experiment with two possible results, A and B, the brain would be in a superimposed state with the...
  15. Dfpolis

    I do not appreciate you closing my thread before I could respond. "Entitlement to belief" was a...

    I do not appreciate you closing my thread before I could respond. "Entitlement to belief" was a courtesy to one who abandon the field rather than answering my response. The criterion for closing a thread should not be that one is questioning a widely held position. The response assumed that...
Back
Top