EDITOR'S PICK
This is Part 3 of a series on topological defects.
Read Parts1and2. Mathematics—specifically the kind of topology that makes coffee mugs and donuts the same thing—insists that the early universe was a messy, knotted-up disaster.
Our best theories of phase transitions say these defects HAD to be born in the cooling fires shortly after the Big Bang.
And as we just established, once you’ve got a knot in the fabric of space-time, you’re stuck with it.
There is no cosmic eraser.
No reset button.
The knots are there, forever (I mean, kind of, but when they go they really GO in an unignorable way). So...
where are they? Or the evidence of where they might have been? Seriously.
I mean, just look at the strings.
We’re talking about 1D cracks in the vacuum that are thinner than a proton but weigh more than a mountain range for every kilometer of their length.
They have gravity.
They have presence.
If the universe is as glitchy as our theories suggest, the sky should be a chaotic spiderweb of these high-tension quantum powerlines. We should be tripping over them.
But we look at the sky, and it’s suspiciously clean.
It’s like walking into a crime scene where the DNA matches, the motive is clear, the weapon is sitting on the table, but the body is just...
gone. Like I said, cosmic strings wiggle…a lot.
And when that much energy moves that fast, it should create a literal chirp that ripples outwards in the fabric of space-time.
We call these gravitational waves.