onsdag 8 maj 2024

Max Born on Copenhagen Interpretation




Max Born played an important role in forming the new quantum mechanics based on Schrödinger's wave equation presented in 1925, by giving its wave function solution a statistical interpretation as electron configuration probability instead of actuality as in classical deterministic mechanics.

It was the multidimensional form of the wave function with $3N$ space dimensions for a system with $N$ electrons without meaning in classical deterministic mechanics in 3 space dimensions, which required a non-classical interpretation and it was Max Born who in 1926 came up with the idea of letting the multi-dimensional wave function represent an immensely rich world of possibilities rather than a real world of actualities in a step from determinism to new quantum world ruled by games of roulette. 

Schrödinger received the Nobel Prize in Physics in 1933 for "the discovery of new productive forms of atomic theory", while it Born had to wait until 1954 to be awarded for "the statistical interpretation of the wave function". 

In his Nobel Lecture Born describes his mixed feeling about quantum mechanics in general and his work in particular: 
  • It contains no discovery of a fresh natural phenomenon.
  • It contributed to the solution of an intellectual crisis into which our science had fallen as a result of Planck’s discovery of the quantum of action in 1900. 
  • Today, physics finds itself in a similar crisis. 
  • Planck, himself, belonged to the sceptics until he died. Einstein, De Broglie, and Schrödinger have unceasingly stressed the unsatisfactory features of quantum mechanics and called for a return to the concepts of classical, Newtonian physics while proposing ways in which this could be done without contradicting experimental facts. Such weighty views cannot be ignored. 
  • Niels Bohr has gone to a great deal of trouble to refute the objections. I, too, have ruminated upon them and believe I can make some contribution to the clarification of the position. 
  • The matter concerns the borderland between physics and philosophy.
  • What is the reality which our theory has been invented to describe?
  • The answer to this is no longer physics, but philosophy.
  • The lesson to be learned from what I have told of the origin of quantum mechanics is that probable refinements of mathematical methods will not suffice to produce a satisfactory theory, but that somewhere in our doctrine is hidden a concept, unjustified by experience, which we must eliminate to open up the road.
In short, Born was not very happy with the state of quantum mechanics 30 years after it was invented. Physics was in a state of crisis in 1900, 1925, 1954 and still is. The cure of statistics has not worked. RealQM presents an alternative without statistics. 

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