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Latest posts
Last updated 5 days ago
Some Notes on AI
18 days ago
This posting is mainly intended to provide some links to material about...
Wick Rotating Spinors and Twistors
about 1 month ago
A couple weeks ago I gave at talk in Marseille on the...
Langlands Program 2.0
about 2 months ago
Yesterday I was at Peter Scholze’s Seminaire Bourbaki talk, his write-up is...
This Week’s Hype
about 2 months ago
Natalie Wolchover at Quanta has an article about a campaign by string...
Formalization of QFT?
2 months ago
There’s a new paper out on the Formalization of QFT, purporting to...
Twistors and Unification
2 months ago
The last few postings here have been about rather technical problems with...
Twistors and Wick Rotation
2 months ago
In the last posting I explained how a fundamental problem shows up...
Weyl Spinor Fields and Right-handed Spacetime
3 months ago
In this post I’ll discuss Weyl spinor fields and explain why Wick-rotating...
Lorentz versus Euclidean Symmetry
3 months ago
Wick rotation changes the spacetime symmetries of a quantum field theory, changing...
Hyperfunctions
3 months ago
I’ve been trying to understand (not entirely successfully yet…) Wick rotation using...
Osterwalder-Schrader and Euclidean Spinor Fields
3 months ago
If one tries to Wick rotate a quantum field theory with spinor...