Scientists Confirm the Existence of 'Second Sound'

[westurner]

https://www.popularmechanics.com/science/a64093045/second-wave-superfluid-existence/

[westurner]

ScholarlyArticle: "Thermography of the superfluid transition in a strongly interacting Fermi gas" (2025) https://www.science.org/doi/10.1126/science.adg3430

[westurner → westurner]

If there are strongly interacting superfluids in black holes and accretion attractor systems, and none of the models describe superfluids, and we observe different thermal behavior in superfluids, can any existing description of black holes be sufficient?

[PaulHoule]

New visualization but not a new phenomenon. I observed it in the 510 lab when I was getting my physics PhD at Cornell.

https://en.m.wikipedia.org/wiki/Second_sound

[westurner → PaulHoule]

Armchair physicist with dissonance about superfluids (or Bose-Einstein condensates) which break all the existing models.

And my armchair physicist notes; /? superfluid https://westurner.github.io/hnlog/ #search=superfluid

I think I've probably already directly mentioned Fedi's?

Finally found this; https://news.ycombinator.com/item?id=42957014 :

> Testing of alternatives to general relativity: https://en.wikipedia.org/wiki/Alternatives_to_general_relati...

- [ ] Models fluidic attractor systems

- [ ] Models superfluids

- [ ] Models n-body gravity in fluidic systems

- [ ] Models retrocausality

Re: gauge theory, superfluids: https://news.ycombinator.com/item?id=43081303

[westurner → westurner]

He said there's a newer version of this:

> "Gravity as a fluid dynamic phenomenon in a superfluid quantum space. Fluid quantum gravity and relativity." (2015) https://hal.science/hal-01248015/