Origin of the schroedinger's wave equation

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Discussion Overview

The discussion revolves around the origins of Schrödinger's wave equation, exploring its derivation, historical context, and the philosophical implications of its status in quantum mechanics. Participants examine the relationship between classical mechanics and quantum mechanics, as well as the role of de Broglie's matter waves in the development of the equation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Historical
  • Debate/contested

Main Points Raised

  • Some participants note that Schrödinger's wave equation lacks a formal proof and is often treated as an axiom or postulate in quantum mechanics.
  • Others argue that the equation was derived heuristically, influenced by the concept of matter waves proposed by de Broglie.
  • One participant mentions that Schrödinger's approach involved drawing analogies between mechanics and optics, suggesting a parallel between classical mechanics and geometrical optics.
  • Another viewpoint emphasizes that while the Schrödinger equation is foundational, it emerged from heuristic arguments rather than formal derivation from more fundamental principles.
  • Some participants highlight that the interpretation of the wave function has been contentious, with discussions around its probabilistic interpretation proposed by Born.
  • A later reply suggests that the time-independent form of the Schrödinger equation can be derived from the condition that de Broglie's wave pattern forms a standing wave.
  • There is mention of the historical context, including Schrödinger's investigation into the equations that de Broglie waves satisfy.
  • One participant challenges the notion that the Schrödinger equation cannot be derived, referencing Galilean invariance as a basis for its proof.

Areas of Agreement / Disagreement

Participants express a mix of agreement and disagreement regarding the derivation and foundational status of Schrödinger's wave equation. While some assert it is an axiom, others believe it can be derived from underlying principles. The discussion remains unresolved with competing views on the nature of the equation.

Contextual Notes

Participants acknowledge the limitations of the discussion, particularly regarding the lack of formal proofs and the dependence on interpretations of quantum mechanics. The historical context surrounding the development of the wave equation is also noted, with references to de Broglie's contributions.

  • #31
Schrödinger's equation can be arrived at using symmetry arguments. Specifically, you write out the commutation relations that exist between the generators of the Galilei group and then choose the position representation. What you find is that the generator of time translations has the same form that is usually ascribed to the Hamiltonian. Details can be found, for example, in the third chapter of Ballentine's "Quantum Mechanics: A Modern Development".
 

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