On Wednesday, October 30, 2019 at 4:36:58 PM UTC-5, Brent wrote:
>
>
>
> On 10/30/2019 12:43 AM, Philip Thrift wrote:
>
> What descriptive term do you prefer? Those IR photons travel at the SoL.
>> The point is that if there's information available for which-way, even if
>> not observed, the interference is destroyed. AG
>>
>>
>> What does "available" mean? The information that left at the speed of
>> light is not "available" in any conventional sense at the screen or
>> detector in the experiment.
>>
>> Brent
>>
>
>
> Here is an unconventional approach if via logical variables in stochastic
> concurrent logic programming:
>
> Timeless Histories
> <https://codicalist.wordpress.com/2019/10/15/timeless-histories/>
>
>
> 0. Given a single source S, a set of possible destinations Dj, j∈J, a set
> of possible histories historyi, i∈I (pictured as spacetime trajectories)
> from S to one of the Dj.
>
> 1. Each history has an evolving phase e*i*·θ(t), *i*=√(-1), where t runs
> from time leaving source to time arriving at destination.
>
> 2. Each history has a hidden (logical) variable* _W (for “weight”):
>
> historyi(_Wi,e*i*·θi(t))
>
> 3. Each history is a “timeless” entity though (cf. *Timeless Reality*,
> Victor J. Stenger). There is no “preferred” time direction.
>
> 4. At each destination Dj, the phases of the histories historyi terminating
> at Dj are summed, the norm is taken, and the result is unified with _Wi.
>
> 5. At the source S, the weights _Wi determine a probability distribution
> on I: a single history is selected at the source.
>
> Conclusion: With timeless histories, the choice is made in the present
> (the time the histories leave the source) probabilistically from weights
> determined in the future (the times the histories reach their destinations).
>
>
> * Logical variables are distinguished here by a “_” prefix. Not only do
> they play a “hidden variable role, they introduce nonlocality into
> logical processes.
>
>
> cf. A histories perspective on characterizing quantum non-locality
> <https://iopscience.iop.org/article/10.1088/1367-2630/16/3/033033/pdf>
>
> ~~~~~~~~~~~
>
> *The limits of my language mean the limits of my world.*
> ― Ludwig Wittgenstein
> <https://www.goodreads.com/quotes/8835123-the-limits-of-my-language-mean-the-limits-of-my>
>
> CLP (concurrent logic programming) and SCLP (stochastic CLP) might provide
> a new language of logical processes for physics — nature as written as
> “billions and billions” of (stochastic) processes. The logical variable
> would play a role as a hidden variable (a term mentioned in some quantum
> theory references) because its binding could allow one process to instantly
> “update” another process separated from it by either space or time (i.e., a
> program-linguistic analog of spacial or temporal nonlocality).
>
> There is no reason physics has to continue to be written in the
> mathematical language of a century ago when there are new languages today
> from the domain of programming.
>
> *Underneath the surface of the classical world lies the hidden births and
> deaths of quantal histories.*
>
>
> It seems to be a weakness of these history based quantum interpretations
> that one must specify a "destination"...exactly like assuming a measurement
> process in CI that is different from the rest of the evolution.
>
> Brent
>
That quantal histories have sources and destinations is a bit odd.
*Figure 6:* Illustration of the many paths an electron can follow through
the double-slit apparatus
[image: \includegraphics[scale=0.5]{quantum_electron_dslit.eps}]
https://www.nyu.edu/classes/tuckerman/adv.chem/lectures/lecture_5/node3.html
@philipthrift
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