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Scientists Confirm the Existence of 'Second Sound'
- westurner 2y agoScholarlyArticle: "Thermography of the superfluid transition in a strongly interacting Fermi gas" (2025) https://www.science.org/doi/10.1126/science.adg3430 https://www.science.org/doi/10.1126/science.adg3430
- westurner 2y agoIf 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 2y agoNew 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 https://en.m.wikipedia.org/wiki/Second_sound
- westurner 2y agoArmchair 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/ 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 https://news.ycombinator.com/item?id=42957014 : > Testing of alternatives to general relativity: https://en.wikipedia.org/wiki/Alternatives_to_general_relativity#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 https://news.ycombinator.com/item?id=43081303
- westurner 2y agoHe said there's a newer version of this: 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/ https://hal.science/hal-01248015/