mathematics
Vafa: supergroups, non-unitary cousins of CFT, and black hole puzzles
Cumrun Vafa has a very interesting new paper, Non-Unitary Holography You may start with a simple question. What happens if you replace gauge groups d…
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mathematics
All of string theory's power, beauty depends on quantum mechanics
Wednesday papers: Arkani-Hamed et al. show that the amplituhedron is all about sign flips. Maldacena et al. study the double-trace deformations th…
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mathematics
New York Times on Terence Tao
The most e-mailed article in The New York Times today is about Terence Tao
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mathematics
Shing-Tung Yau goes after shoddy journalists
On Wednesday noon EDT, there will be webcast on the URL below. Yesterday, Prof. Shing-Tung Yau , one of the greatest mathematicians of our era, and -…
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mathematics
Surface operators in gauge theory
A recent paper of Sergei Gukov and Edward Witten is quite an extensive opus, and it would take 5 hours or more to give a talk about it. That's w…
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mathematics
Farmelo's interview with Witten
Last year, physicists' (especially Dirac's) biographer Graham Farmelo interviewed Edward Witten . (Hat tip: John Preskill, Twitter.) If you h…
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mathematics
Olympic medals per capita, GDP, team size
The Data Blog at the Guardian's sport section has printed interesting tables of Olympic medals that take the nations' population or GDP or t…
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mathematics
EGG 912: generalized G_2 structure
Warning: a somewhat technical post, not recommended to string theory outsiders Pacheco and Waldram generalize the G_2 structure of 7-manifolds into …
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mathematics
Lisi, Distler, Garibaldi, and chirality
Last August, when I met Lenny Susskind in Prague, he told me that it was OK for Garrett Lisi to propose his revolutionary idea. People decided it was…
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mathematics
Eta function and the sum of positive integers
In the previous articles , I described various calculations of the sum of positive integers and discussed the context in which it is right to say tha…
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mathematics
Davide Gaiotto: Killing the two-headed monster
Edward Witten has proposed his AdS/CFT dual of pure gravity in three-dimensional anti de Sitter space. In the bulk, pure gravity looks as simple as…
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