Dark Energy Turns On When Galaxies Are Born ⚡ экспресс
The locally accumulated dark energy (LPDE) mechanism explains the acceleration of the universe's expansion through the emergence of nonlinear dark matter structures. In the effective field theory formalism, coarse-graining over the density contrast profile during halo formation induces a shift in the local equilibrium of a massive scalar field χ, generating vacuum energy inside the halo. With a Compton wavelength confined to the halo scale, gradients are exponentially suppressed on large scales, so the volume-averaged contribution behaves as a homogeneous dark energy component. Using the halo mass function of ΛCDM cosmology, it is shown that vacuum energy dominance naturally sets in at z~1. An explicit realization of the mechanism demonstrates a transient acceleration epoch and excellent agreement with DESI data.
The universe is expanding faster and faster, and scientists blame it on dark energy. Its origin is explained in a new way: dark energy isn't eternal, but appears only after dark matter clumps together into lumps — future galaxies.
The mechanism works like a pump that turns on when pressure drops. Inside the clumps of dark matter, a repulsive force is born, acting as dark energy. The more structures form, the stronger this effect — each galaxy becomes a tiny generator, accelerating the cosmos.
Calculations show: dark energy began to dominate about 7 billion years ago, when the universe had accumulated enough large clumps. This matches recent observations. The most surprising thing: if dark energy had been constant from the beginning of time, it would have prevented the formation of galaxies. In this model, it "politely" waited until structures emerged, and only then switched on accelerated expansion.
🎯 Constant dark energy from the very beginning would have prevented galaxy formation. In this model, it "politely" waits until structures form.