Neil Turok
speaker
2,693 appearances
2 recordings
1 series
first heard Apr 2025
last heard 22 Jun
Neil Turok’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Jun 2026 with 1.
Appearances
It's a perturbative theory.
It's weakly coupled.
Now we go down to lower energies.
Imagine this high energy is the Planck scale, just for, you know, as an example.
You can then ask yourself, well, what would happen?
You can ask yourself, at what scale would this coupling become strong as I come down in energy?
When couplings run with energy, it's only logarithmic.
And that's what happens in this theory.
It's very, very slow change with energy scale.
So as you come down in energy scale,
It is absolutely natural and almost unavoidable that the scale where it becomes strong is exponentially smaller than the scale you initially defined it.
And in fact, that's the case with QCD, right?
QCD predicts a mass scale of around a GeV.
but we have Planck mass in our theory.
No one regards that as fine-tuning.
Why?
Because the QCD coupling is something like a 30th at the Planck scale, and then we come down in energy and become strong at about one GB.
Not a surprise because it runs so slowly with energy.
And it's exactly the same with this theory.
So we hope, so there's a kind of puzzle in particle physics and gravity.
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