Yang-Hui He
speaker
1,500 appearances
1 recordings
1 series
first heard Jan 2025
last heard Jan 2025
Yang-Hui He’s voice in public audio — every appearance, attributed to the second.
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But anyhow, just random, random, random thought.
So back to so string theory was just one slide, right?
I mean, I'm not in i in some sense I'm not I'm not a string theorist.
In the sense, you know, I don't go quantize strings.
You know, I the kind of stuff that I'm more interested in is like I didn't I didn't grow up writing conformal field theories and do do all that stuff.
It's just that it for me it's an input so I can play with a little more problems in geometry.
Yeah.
Um
So string theory is this theory of sp space-time that unifies quantum gravity, blah, blah, blah.
And then it's it it works in in ten dimensions and we've got to get down to
four dimensions.
So we're missing six dimensions.
So that's that's what I'm gonna say.
And this this this this amazing paper in 1985 by Candeles, Horowitz, Strominger, and Witten.
They were thinking about what are the properties of the six six extra dimensions.
So, what is interesting is that by imposing supersymmetry, and this is why supersymmetry is so interesting to me, by imposing supersymmetry.
And
Other, you know, anomaly cancellation, bunch of cond not too stringent conditions.
They hit on the condition that this six extra dimensions has to be richie flat.
Richie flat is you can understand because it's vacuum-like style solutions.
Showing 1061–1080 of 1,500 · page 54 of 75
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