RUTA said:
I understand solutions to Laplace's eqn on S3 (as opposed to E3). You don't have to equate the solution with displacement in a 4th spatial dimension, it can be ANY scalar quantity (temperature, for example), so that the values of the field can be interpreted easily in 3D.
I will try to give you the reason why E3 spherical harmonics must conform to a 3-sphere in E4 space in the form of a mathematical theorem. Here goes nothing!
Proposition: In order for there to exist the possibility of dynamic translational inter-relations between bodies that take the form of 3-dimensional standing waves, the bodies must conform to the shape of a 3-sphere.
Axiom #1: There exist standing waves that are contained within an arbitrary space, such that the boundaries for each standing wave are mutually exclusive, 2-dimensional spheres.
Problem: We now have a distinction between interior, "material" space and exterior "void" space. But by definition, a void is perfectly devoid of any characteristics. Therefore, inter-relations between the standing waves is not possible, which means that for the possibility of inter-relations between standing waves to exist, they must not exist in a state of mutual exclusivity.
Axiom #2: There exist an arbitrary number of 3-dimensional standing waves that each exist within, and are defined by, the same 2-dimensional boundary.
Problem: Each standing wave will necessarily remain centered at the same location, since this center is determined precisely by the spherical boundary. While there may exist rotational inter-relations, there cannot exist any translational inter-relations (i.e. the centers of bodies cannot move relative to one another).
Solution: Since Axiom #1 is clearly impossible, it must be the case that standing waves exhibit the character of mutual inclusivity in order to avoid the problems inherent in the matter vs. void paradox. And since it is clearly impossible that this mutual inclusivity can take the form of standing waves that have the very same boundary conditions, then there must exist a way for them to be defined by different boundaries, and at the same time, to exist in a state of mutual inclusivity.
We need to first define each standing wave in its own, local 3-dimensional Euclidean space, and then find a way so that each of the waves can be centered at different locations within the same universal space, so as to allow for the possibility of relative translational motion. This can only be effected by way of allowing the defining boundaries and interior spaces of each standing wave to be wholly independent of the selfsame space in which they are to inter-relate. We must therefore consider a point other than the centers of the individual spheres as representing each of their own "origins," and the only symmetrical way to accomplish this is to collapse their 2-dimensional boundaries into singular points. For this operation to ensue, we require the use of a fourth Euclidean dimension. Now, the individual standing waves attain the possibility of translational inter-relations, because the generalized "boundary collapsing procedure" allows for each boundary to be placed at arbitrary locations on a common, 3-spherical, universal manifold.
Conclusion: The proposition in question has been proved.
RUTA said:
Yes, Schrodinger wrote a paper about this (or was it a short book?). But, the bottom line is, you're not doing QM here. Again, in QM, you solve Schrodinger's eqn (SE) for psi in configuration space where there are three spatial dimensions for each particle involved. The only link between what you are proposing and QM is the time-independent, single particle solution of SE on S3. Interesting, but hardly exhaustive, i.e., pick up an intro textbook on QM and look at all the solutions of SE that you can't reproduce. Thus, you're not doing QM so you would have to show how your approach gives results from QM that are known to work. I doubt that it's possible.
And I agree with your assessment entirely, which is why we currently find ourselves in the "non-QM / non-physics / non-scientific / non-anything-of-relevance" Philosophy section ;) ! And such is the pattern of my life!
And this is why we need to distinguish the notions of 1) "Quantum Mechanics" as the modern, specialized formalism which merely carries Schrodinger's name, and 2) the more general concept of "Atomic Theory," wherein some of the deepest and most articulate thinkers that have ever existed came together for an all-too brief moment in history and actively tried to "figure out" what we should ultimately be "allowed" to say about the physical reality in which we find ourselves immersed.
So I just repeat myself when I say that the disagreements that we are having here do
not arise from whether one or the other of us is "more correct." This is to say that 1) those who tend to have sympathy for the de Broglie /Einstein /Schrodinger /Bohm "picture" version of atomic reality, versus 2) those who align themselves with the Bohr /Heisenberg /Born /Dirac "formalism" version of atomic reality, do not necessarily simply
misunderstand each other's positions. This is much rather a profound philosophical disagreement as regards the nature of the kinds of statements that should be accepted as truthful propositions vis-a-vis the scientific community as a whole.
According to modern QM, then, "science" must only ever ultimately reduce to empirical observation and never to a purely objective mathematical "picture," such as the dynamic object, U, that I have been attempting to impress you all with. But what happens when such is the case? It means that our theories say absolutely
nothing about any kind of self-subsisting entity that we can call a "universe," but they only rather say things about virtual observers who are running around, conducting experiments, and tallying their results over an infinite number of trials. And here is ultimately all that is said about the modern formalism that you are trying to persuade me to recognize as "valid":
'An observer who conducts the same experiment over an infinite number of trials will, on average, observe the necessary "prediction" of quantum mechanics.'
But when you read into this statement, all it is "really" saying is just:
'For a given experiment, an observer will probably witness the most likely outcome.'
But this is a pure tautology! That is, there is precisely nothing of "interest" that is being asserted here at all!
So, this is why it is important for theoretical physicists to start expanding their minds beyond a framework that leads to nothing other than the equation:
A = A
...so that meaningful propositions can once again be asserted, leading to a renewed spirit in a discipline that has not really made any "interesting" statements of any fundamentally theoretical significance for the major part of an entire century!
And here is where my thinking starts to get
really deep. That is, the "real" reason why the standing wave elements need to conform to a spherical form is just that we need to start not from a posture of mere tautology as above, but rather from a posture of logical complementarity:
A = ~B && B = ~A
(where '~' is the complement operator, and '&&' is the logical 'and' operation)
In other words, this just means that for every possible location, A, within the universe, there is a logical complement, B--with the obvious geometric interpretation being that A and B exist as opposing poles of the same spherical manifold. So now, with the inclusion of an essential complementarity/polarity at the most basic theoretical level, there is no longer a possibility that our theories will reduce to statements of sheer identity. That is, for every possible spatial element that we can imagine, there is now a symmetrically opposite element that allows there to be a concept of the opposing forces/tensions that keep our universe vital and whole, saving us from "fretting" over the possibilities of all of those cosmological "disaster scenarios"--i.e. the "big crunch" or "thermodynamic rundown."
I know that this is all very deep, and can all be extraordinarily overwhelming, leading to feelings of exasperation, so I just want you guys to take me as somebody that is capable of "taking you along a path," if that is what you truly want. That is, I have only
begun to scratch the surface as far as the overall way of thinking that I have developed over these many years, and all of this thinking about physical reality will only lead you to even deeper questions, such as have been asked by humans since the dawn of civilization. So, if you guys just want to keep your bosses happy so that you can keep your jobs, and remain relatively "sane" in the process, I would advise you to probably forget about this thread.
Hint: This is not about math or physics or philosophy... it is about all of them at the same time!