What physics would look like if QM had not been invented?

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Discussion Overview

The discussion explores the hypothetical scenario of what physics might look like if quantum mechanics (QM) had not been developed. It considers the implications for classical mechanics, the evolution of physical theories, and the potential for alternative models, particularly in the context of an alien civilization's scientific development.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant suggests that classical mechanics' development seems natural and questions whether the axioms of QM are truly universal, pondering the influence of historical figures on scientific foundations.
  • Another participant argues that the best foundations of physics are discovered rather than decided, implying that even with different early models, a final theory would emerge that includes states, operators, and standard equations of motion.
  • A different viewpoint posits that while an alien civilization might not adopt our specific axioms of QM, they would likely arrive at similar calculational methods, despite differences in interpretation.
  • One participant expresses skepticism about the appropriateness of the topic for the forum, suggesting it borders on science fiction.

Areas of Agreement / Disagreement

Participants express differing views on the nature of scientific foundations and the potential for alternative models. There is no consensus on whether the axioms of QM are universal or how an alien civilization might develop their understanding of physics.

Contextual Notes

The discussion raises questions about the historical context of scientific discovery and the role of individual contributions, but does not resolve the implications of these factors on the development of physics.

jarekduda
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It is hard to imagine that classical mechanics could develop in an essentially different way - Newton, derivatives, Coulomb etc. This seems a very natural evolution of understanding and intuitions.

However, the early XX century physics: axioms of QM (and GRT) seems strongly dependent on a relatively small group of people deciding the foundations, which violate natural intuitions.
What if these were some other people?
What if such drastic change of thinking did not get sufficient solidarity?
Are these axioms really universal?
What if an alien civilization would reach our technological level?

This question comes from Grujic: "what would have happened had the QM not been invented?" who describes the free-fall atomic model ( https://en.wikipedia.org/wiki/Free-fall_atomic_model ) as the base of such alternative history. This modern (1957-2004) classical approach focuses on Bohr-Sommerfeld orbits degenerated to 0 angular momentum (like s orbital): nearly radial electron trajectories, which avoid collision with the nucleus due to magnetic dipole moment of electron (known since ~1925). Its author (Gryzinski) shows in many (~30) articles published in top journals (Phys. Rev. class) surprisingly good agreement with experiment - much better than Bohr, sometimes even better than quantum (mainly various scattering scenarios, but also e.g. Ramsauer effect, calculation of diamagnetic coefficient etc.). His papers have ~3000 total citations ( https://scholar.google.pl/scholar?hl=en&q=gryzinski ).

Do you think a developing alien civilization would get exactly our axioms of QM?
What if they had first the free-fall atomic model (much better agreement than Bohr), treating it as the base to develop from?
 
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jarekduda said:
a relatively small group of people deciding the foundations
The best foundations are not decided upon but are discovered. Nothing much could have been different, except for the order of discoveries and the early history. What makes it into a modern textbook (apart from its historical introduction and the details of how the basic machinery is introduced and motivated) is essentially universal.

Even if the first models would have been very different from Bohr's, the final theory would figure states, operators, and the standard equations of motion, together with all the auxiliary material needed to solve the equations or to approximate them efficiently.
 
jarekduda said:
Do you think a developing alien civilization would get exactly our axioms of QM?
Not exactly our axioms (which are highly tinted by interpretation, where differences abound), but almost exactly our shut-up-and-calculate part.
 
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This is not even science fiction. We don't have a forum where this topic is appropriate.

Thread closed
 

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