Max-Planck-Institut für Physik
1 HN recommender · recommended in 3 months, 2022–2025
49:43 · 254K views · Sep 8, 2022
Theoretical physicist Nima Arkani-Hamed gives a public talk on why spacetime may not be fundamental and what might replace it, including newer approaches to scattering amplitudes.
Praised as a jargon-light talk on advanced physics that HN cites when arguing spacetime is not fundamental.
3 comments from Hacker News
I couple of weeks ago, I watched a really good talk by Nima Arkani-Hamed on the same topic: this video that I discovered via [LINK] I found Nima's lecture to be a masterclass on how to explain very advanced physics topics without using unnecessary jargon, or math. Highly recommended for anyone interested in this topic.
The paper is written in scathing tones, by page 11 I was laughing at each new report of QED's 'perfect' agreement with whatever was the latest experimental result for the electron's anomalous magnetic moment although as it continued as far as page 14, it became sobering. However, the recent discrepancies are way down in the decimal points of the result now; when these calculations require 1000s of complicated Feynman diagrams and pages and pages of calculation, errors seem inevitable. My hope is that an alternative approach can be found that avoids these complicated calculations and in fact, researchers already seem to be working on this [1]. [1] Nima Arkani-Hamed - The End of Spacetime (Sep 2022) this video
Umm SpaceTime is likely NOT to be fundamental or continuous this video Also Bells Therom implies no locality or non realism which to me furthers the nail on the coffin of spacetime