Reality of Space: Exclusive Occupancy

Exclusive Occupancy in Europe 2021

The era of modern physics was initiated at the turn to the 20th century as a break away from the basic principles of classical Newtonian macroscopic continuum physics covering all of mechanics and electromagnetics, viewed to be useless to describe the microscopic physics of the world of atoms built from protons and electrons, and so a new form of physics based on new principles named quantum mechanics QM was developed by Bohr, Born, Heisenberg and Schrödinger.  

The classical principles of realism with a direct connection between model and reality and determinism were given up and replaced by mathematical formalism in multi-dimensional configuration space combined with indeterminism/statistics into a new quantum world beyond realistic interpretation. This was a step away from rationality with far-reaching consequences for modern society/politics following the same tragical path away from rationality. Compare with the sequence of posts on Corruption of Modern Physics.

But is it really true that the microscopic world of atoms is conceptually so different from the macroscopic world we can model and understand, like a planetary system governed by Newtonian mechanics?. In RealQM I describe such a scenario based on principles of classical continuum mechanics. In RealQM an atom is described as a kernel surrounded by non-overlapping shells of electrons, each electron like unit charge density cloud occupying a certain region of its shell.   

A basic principle of continuum mechanics is the concept of density like mass density as amount of matter per volume, like number of atoms or particles per $m^3$. It is then assumed that each particle occupies a certain region/volume in space altogether filling space and that particles do not overlap. Allowing particles to overlap would ruin the idea of density. We can refer to this principle as Exclusive Occupancy, which we meet in so many ways in ordinary life and Family Law. Each passenger has Exclusive Occupancy of a seat in an airplane. Each country occupies its own territory, unless it is occupied by someone else. Each atom or particle is the sole occupant of its region in space. But a passenger cannot occupy two different seats at the same time, nor a particle.  

Non-overlap in space is thus a basic principle of real physics as physics with direct connection to reality. It is a principle of RealQM, but not of the standard form of QM, where electrons are not assigned different regions of real space, only in configuration space. 

We can view Exclusive Occupancy as a basic feature of space. We know that a 2d chip has room for only a finite number of circuits each occupying a certain area, and that stacking on top into 3d is the only possibility to give room for more, but we also know that stacking into 4d is impossible. 

But of course in the quantum world of configuration space of any dimension there are no such limitations which is now funnelling venture capital into quantum computing suggesting endless fiction, but probably nothing real, like solving the housing problem for home-less by opening one single apartment for occupancy without exclusivity.  

Main question to answer: Is Exclusive Occupancy a basic principle of physics?   

In RealQM electrons meet with continuity of charge density combined with zero normal derivative (homogeneous Neumann condition), while a proton meets an electron with zero charge density from both sides. Electrons meet shoulder by shoulder like friends, while a proton and electron meet as antagonists divided by a neutral (zero) boundary zone.