Jacob Barandes
speaker
7,673 appearances
5 recordings
1 series
first heard Jan 2025
last heard Jun 2025
Jacob Barandes’s voice in public audio — every appearance, attributed to the second.
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You read these papers and they were these discussions about the nature of of what was really out there.
And although they were trying to address
at some level practical questions, at some level philosophical questions, those philosophical arguments inspired by and generated important insights into thinking about how entanglement worked.
Um but I would add to that collection
Uh David Bohm's work on decoherence, you know, he
decided in his textbook, his 1951 textbook, to probe the structure of measurement from a foundational philosophical point of view, not to take for granted just what was handed to us from the Dirac Phenomen axioms.
And in this chapter, chapter 22, he goes through this whole process and in 22.8 he talks about, he introduces this idea of decoherence in a rigorous way, the first rigorous um description of how decoherence works
He knew better than anybody how decoherence worked and he was
Not convinced that that was enough to resolve the measurement problem.
That's why he introduced his hidden variables approach, partly out of conversations he had with Albert Einstein.
Um
But decoherence is now
ubiquitous in papers throughout.
Quantum physics, from high-energy physics down to atomic, molecular optical physics, quantum information, quantum computing.
You can't pick up a paper without reading about decoherence timescales, how to protect systems from decoherence, the importance of decoherence in understanding the emergence of the classical world, but also protecting systems from decoherence so you can get the sort of delicate entangled superpositions you need to to get successful quantum computation to happen.
Yeah, but but but you know, uh this crucial idea that plays such an important role in s some of these papers goes back to philosophical thinking about these problems, problems that were considered too philosophical for serious physicists to think about and ultimately had negative career repercussions on David Bohm and on Dater Zay, who worked on decoherence in the seventies as well.
Um Bell was inspired by the EPR argument to develop Bell's theorem.
Yeah.
The sort of thing originally that Bell worked on kind of in secret.
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