A magnetic clock for a harmonic oscillator · HackerPapers discussions

A magnetic clock for a harmonic oscillator — mentioned by codeulike

Wed, 07 Aug 2024 09:45:04 GMT

You shouldn't take 'Illusion' too strongly here. Ms Hossenfelder is saying that conceptually time can't really be separated from 'change' so the only way to measure time is to have some constantly changing but steady ticker like a pendulum. This has always been a problem in quantum mechanics because you can't study the a system independently of its clock, you have to add the clock to the system. The video is discussing a paper where they use entanglement and a tiny ticker to get around this problem. Arxiv: https://arxiv.org/abs/2310.13386 So don't worry everyone time still exists.

Paper and discussion history. A mention is not an endorsement.

A magnetic clock for a harmonic oscillator — mentioned by magicalhippo

Tue, 04 Jun 2024 02:58:39 GMT

Preprint here[1]. The headline seems a bit click-baity, as it refers to the Page-Wooters mechanism which was introduced 30 years ago, and as mentioned in the paper has been extensively studied. A brief and accessible overview can be found here[2]. However this paper seeks to provide a more concrete and less constrained implementation of the Page-Wooters mechanism in order to connect it to our classical world better that previous attempts. So while probably not a breakthrough paper, a solid step in an interesting direction. [1]: https://arxiv.org/abs/2310.13386 [2]…

Paper and discussion history. A mention is not an endorsement.

A magnetic clock for a harmonic oscillator — mentioned by antonvs

Tue, 04 Jun 2024 02:36:54 GMT

arXiv link: https://arxiv.org/abs/2310.13386

Paper and discussion history. A mention is not an endorsement.