Will u guys give some comments on the transactional interpretation?

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Discussion Overview

The discussion centers on the transactional interpretation of quantum mechanics, as proposed by John Cramer. Participants explore its concepts, implications, and comparisons with other interpretations, particularly in the context of a report deadline approaching for one participant.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes the transactional interpretation as involving observers sending electromagnetic waves forward and backward in time, questioning the practicality of such a model.
  • Another participant notes the historical context of the interpretation, mentioning that it seemed more appealing when a "big crunch" scenario for the universe was considered plausible.
  • This participant elaborates on the mechanics of advanced and retarded waves, explaining how Cramer proposes that both types of waves propagate into the future and past, with absorbers reflecting them, leading to interference that results in wave function collapse.
  • Concerns are raised about the implications of an accelerating universe on the viability of the transactional interpretation, with uncertainty expressed about whether it can be reconciled with current cosmological models.

Areas of Agreement / Disagreement

Participants express differing views on the appeal and practicality of the transactional interpretation, with some appreciating its ingenuity while others are skeptical. The discussion remains unresolved regarding the interpretation's compatibility with contemporary cosmological understanding.

Contextual Notes

Participants note limitations in the discussion, such as the lack of recent insights from Cramer or others on how current cosmological models affect the transactional interpretation.

peter308
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recently,i am having a report on the issue concerning the quantum interpretation,somehow,i choosed to read the transactional interpretation by prof cramer.i have complete about 60% of the studying,however,the deadline is coming closer(march 13th).as a result,the alternatives interpretations won't be viewed.
therefore,would u guys give some comments on the transactional interpretaion? moreover, comparing it with other interpretations will be gratefully appreciated!

best wishes!
 
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It says something like observers sending electromagnetic waves forward and backwards in time, if you receive an electromagnetic wave from the past, and accept it, you complete the "transaction" and send it back to the past. Not my favourite interpretation, I do not feel like I'm doing negotiations with my grand-grand-grandfather!
 
The transactional interpretation was certainly ingenious, but it looked a lot better a decade ago when people envisioned a "big crunch" in the future of the universe.

The idea is that quantum mechanics, and eleectromagnetism too, produce both "advanced" and "retarded" waves. Advanced waves, in the mathematics, propagate into the past, and retarded waves propagate into the future. Conventional physics just ignore the advanced waves as "unphysical", but John Wheeler and Richard Feynman took them seriously and developed a version of electromagnetism based on that.


Enter now John Cramer, who says, let the quantum wave functions, both retarded and advanced, propagate into the future and the past. And suppose that in both the far future and far past there are absorbers, that will reflect the waves. The one in the past is no problem, it's the big bang. And the cosmology of ten years or more ago foresaw a symmetrical big crunch end of the universe which could serve as the future absorber.

The reflected wave functions from past and future would then meet at the event that created them, and INTERFERE, yielding the collapse of the amplitude wave that we see in quantum experiments. Cramer worked through all the math and it came out even; it explained quantum weirdness on the basis of the mathematically classical wave functions.

I haven't seen Cramer's thoughts, or anybody else's for that matter, on how the accelerating universe affects the transactional interpretation. Can it be saved? Dunno.
 
thx a lot,dude
thumbs up!
 

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