Natural Sciences, Mathematical Sciences, Naturvetenskap, Matematik, Physical Sciences, Atom and Molecular Physics and Optics, Fysik, Atom- och molekylfysik och optik (Här ingår: Kemisk fysik, kvantoptik)

We reconstruct Quantum Mechanics in a way that harmonizes with classical mechanics and electromagnetism, free from mysteries or paradoxes such as the collapse of the wave function or Schrödinger’s cat. The construction is inspired by de Broglie’s and Schrödinger’s wave mechanics, while the unifying principle is Hamilton’s principle of least action, which separates natural laws from particular circumstances such as initial conditions and leads to the conservation of energy for isolated systems. In Part I, we construct the Quantum Mechanics of a charged unitary entity and prescribe the form in which the entity interacts with other charged entities and matter in general. In Part II, we address the quantum mechanics of the hydrogen atom, testing the correctness and accuracy of the general description. The relation between the electron and proton in the atom is described systematically in a construction that is free from analogies or ad-hoc derivations, superseding conventional Quantum Mechanics (whose equations linked to measurements can be recovered). We briefly discuss why the concept of isolation built into Schrödinger’s time evolution is not acceptable and how it immediately results in the well-known measurement paradoxes of quantum mechanics. We also discuss the epistemic grounds of the development and provide a criticism of instrumentalism, the leading philosophical perspective behind conventional Quantum Mechanics.