Gravitational Waves from the Boiling Universe: A New Precise Method ⚡ экспресс
In the early Universe, the quantum vacuum could bubble up with a new phase — like water boiling in a kettle. Previously, calculations of this process depended on the observer’s ‘point of view’ (gauge). Now, it’s been shown how to achieve an objective picture, to more accurately predict gravitational waves. What story might this cosmic echo tell us?
In the infant universe, right after the Big Bang, space was expanding rapidly, and the vacuum resembled a superheated liquid. When 'boiling' began, bubbles of true vacuum emerged. Expanding at the speed of light, they triggered gravitational waves — tremors of space itself that have reached us.
The problem is that old calculations of these waves depended on the choice of coordinates, like a shadow cast by a lamp. The authors applied a mathematical trick from neutrino physics — the Nielsen identity — and got rid of this ambiguity. Now, within the Standard Model of elementary particles, the birth of bubbles is described uniformly.
This method will allow a more accurate reconstruction of the cosmic boiling signal and, perhaps, let us hear the echo of creation.
🎯 If we imagine our Universe as a giant inflatable ball, then gravitational waves from the ancient 'boiling' are microscopic vibrations on its surface, detected by instruments sensitive to displacements thousands of times smaller than an atom.