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 over the last 12 months — 1 in all, peaking in Jun 2026 with 1.

Appearances

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Uh and in fact, this is absolutely analogous to what happens in our description of cosmology.
We go back to the Big Bang and we just follow it through and we come out on the other side and there's another Big Bang there.
And it turns out that all known solutions of GR have which have uh yeah, have this form.
All known black hole solutions and uh all cosmological solutions which begin.
with radiation domination, as ours seems to, they all have this property of the two sided character.
So but what surprised us is that when we uh so we found we emerge on the other side without even noticing the black hole interior.
Okay.
So mathematically, effectively you hit the horizon surface on one side, and you come out on the horizon surface on the other side into the other universe without seeing anything in between.
So there is no black hole interior in this solution.
Uh now that seems strange.
Uh something must go wrong because we've managed to avoid, you know, the singularity, because in the middle of a black hole, inside the black hole, there's this curvature singularity, which is where the I Einstein equations break down.
And you know, if you fall into a black hole, you're going to hit the curvature singularity.
There's nothing you can do, and you'll be sort of crushed.
stretched infinitely.
Um so the standard description has this severe problem.
that inside the black hole the equations fail.
Um that doesn't happen in our case, but something else does fail.
It turns out that in the usual picture of general relativity, you have this space-time metric.
Which you use to measure distances.
And in the normal approach to general relativity, that's a matrix.
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