Ghosts of the Universe: Neutrinos as Dark Matter ⚡ экспресс
Using quantum field theory in curved spacetime, it is shown that the 'flavor vacuum' of neutrinos (a special quantum state of mixing particles) behaves like dust and cold dark matter. In a weak gravitational field, such a vacuum creates a correction to the Newtonian potential, resembling the Yukawa potential. This correction naturally explains the puzzlingly flat rotation curves of spiral galaxies — a key piece of evidence for the existence of dark matter. Thus, neutrino mixing, well-known to physicists, becomes an unexpected contributor to the dark mass of the Universe.
For nearly a century, astronomers have watched galaxies spin as if held together by invisible mass. Fritz Zwicky first noticed it, and Vera Rubin precisely measured the speeds of stars at the edges. The explanation — dark matter, a mysterious substance whose gravity stops stars from flying apart.
A new hypothesis: the ghostly nature of neutrinos itself creates the missing mass. In curved spacetime, different types of neutrinos continuously morph into each other, like ghosts changing guises. These transformations generate energy, which on galactic scales amplifies the gravitational pull. So silent ghosts become the invisible glue holding galaxies together.
🎯 Every second, about 100 billion neutrinos from the Sun pass through your pinky fingernail.