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bio website member.ipmu.jp/yuji.tachikawa
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visits member for 3 years, 6 months
seen Apr 17 at 9:01

As an occupation, I'm a mathematical physicist, studying string theory and quantum field theory.

I've developed as a hobby a few Cocoa (Touch) apps. The largest one so far is spires.app, which manages articles and metadata downloaded from the arXiv eprint server, the inspire database, and the journal websites.

I'm also interested in many other things, which is why I ask questions in various StackExchange sites ...


Oct
17
comment realization of: CFT generating fuction = AdS partition function
I meant, nothing can beat ... . English is not my first language:p
Oct
17
answered Scaling solutions in context of Denef - Moore
Oct
17
comment realization of: CFT generating fuction = AdS partition function
Nothing can't beat arxiv.org/abs/hep-th/9905111 .
Oct
15
answered realization of: CFT generating fuction = AdS partition function
Oct
12
comment Paper listing known Seiberg-dual pairs of N=1 gauge theories
Thanks, but I was not asking for reviews. I'm looking for a comprehensive list of dual pairs.
Oct
12
asked Paper listing known Seiberg-dual pairs of N=1 gauge theories
Oct
12
comment Is there a theorem that says that QFT reduces to QM in a suitable limit? A theorem similar to Ehrenfest's theorem?
Physically speaking, you shouldn't care about those niceties. Nobody knows if the real word coordinates is really described by real numbers. They may just be rational numbers, or maybe of the form (very, very small number) x integer. Real numbers might be our approximation.
Oct
11
comment Is there a theorem that says that QFT reduces to QM in a suitable limit? A theorem similar to Ehrenfest's theorem?
No, being East Asian, I just loosely quoted a word of Confucius. (The original parable was that he advised a person to eat more, and advised another person to eat less. A disciple who was seeing this was confused, and asked the master why he gave opposite advice. Confucious said that the first person was somewhat fat and the second person was somewhat thin, and the advise should be made according to the person.) To be a bit more specific, I guess your answer (about infrared divergence, etc.) was too high level for the original question, leading to the down votes. I didn't down vote you.
Oct
11
comment Is there a theorem that says that QFT reduces to QM in a suitable limit? A theorem similar to Ehrenfest's theorem?
@VladimirKalitvianski Being correct and being pedagogical are not always the same, I guess.
Oct
11
answered Is there a theorem that says that QFT reduces to QM in a suitable limit? A theorem similar to Ehrenfest's theorem?
Oct
9
answered Why isn't there heterotic holographic QCD?
Oct
8
comment Instanton Moduli Space with a Surface Operator
Satoshi, do you know you can formally accept the answer by clicking the big white check mark at the left of the answer?
Oct
8
accepted Any use for $F_4$ in hep-th?
Oct
7
comment Any use for $F_4$ in hep-th?
Wasn't Romans' F(4) the super algebra F(4)?
Oct
7
asked Any use for $F_4$ in hep-th?
Oct
6
comment Uniqueness of supersymmetric heterotic string theory
Thanks again, corrected.
Oct
6
accepted Uniqueness of supersymmetric heterotic string theory
Oct
6
comment Uniqueness of supersymmetric heterotic string theory
Ah, thank you. Could you edit your answer accordingly (sorry for my mistake in my original question)? I'll accept yours immediately.
Oct
6
comment Other processes than formal power series expansions in quantum field theory calculations
Also note that this asymptotic series proves to be extremely precise, e.g. the theoretical result for $g-2$ calculated in this series agrees with the experiment to 10 significant digits. See en.wikipedia.org/wiki/Anomalous_magnetic_dipole_moment
Oct
6
comment Uniqueness of supersymmetric heterotic string theory
And could you suggest me where it is shown that these two solutions are unique? That was my question.