Is there a real chance that there is a multiverse?

[Alex K]

Here's something to blow your minds: The quantum wave functions with sharp energy/angular momentum



And yes, the energies have integer ratios, so you would get harmonic chords out of them if you played them in superposition
Also, I'm sure they look like something someone once drew in their Ashram.

I hope I haven't burnt Arkies fuse with that

I saw somewhere recently that they've made a sonic black hole in the lab using blue lasers or something like that.  But tying QM particles into harmonics in this way is in fact legitimately trippy, and gives a little credence to those who skip all the science and jump straight to the woo.

Yes, it arises thusly: the Schrödinger equation directly ties frequency and wavelength to the energy, and the quantum states of definite energy therefore correspond to certain fixed frequencies, and when you consider a spherically symmetric system such as a hydrogen atom, fixed frequencies correspond to these harmonic 3D modes. That's not woo, that's still just mainstream science. It starts becoming woo when you start wrongly interpreting frequency and energy as something pertaining to our lives such as luck, or health, or some such.

I've written about the black hole in the lab, but in German...

So the experiment of that guy in Haifa was very cool. It's actually an older idea by Unruh who worked like Hawking on the creation of radiation from spacetime geometry. So his idea was, why not simulate a black hole where no light can escape by having material flow to expand or contract faster than the speed of sound in that material. Then, sound waves are trapped in an area of space just like light is trapped in a black hole horizon, and the analogy can even be made relatively precise mathematically. In order to simulate that the Hawking radiation is a quantum process involving entangled particles, as a fluid they use a Bose Einstein Condensate where all the particles have such uncertainty that they are spread out, such that parts of their wave function are in front of the sound horizon, parts behind. And in that setup, he could observe sound noise in the bose einstein condensate emanating from that horizon where sound should not be able to escape because of the limited speed of sound, and the quanta of the sound vibrations (basically the smallest possible vibrations) corresponded to the Hawking radiation. The big thing is that he could show evidence for entanglement between the sound quanta emanating outside the horizon and the ones falling in, just like with Hawking radiation coming from pairs of virtual particles created spontaneously near the event horizon where one comes out and one with negative energy falls in.