Craig Thone
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 2d awarded Yearling 2d revised scalar field boundary condition in background with U(1) isometry added 2 characters in body 2d asked scalar field boundary condition in background with U(1) isometry Apr 22 revised what is the metric of N-sheeted $AdS_3$? added 1 character in body Apr 21 asked what is the metric of N-sheeted $AdS_3$? Aug 14 awarded Popular Question Apr 29 awarded Yearling Dec 16 answered Quantum information references Nov 11 asked One loop correction to $F^2$ in massless QED, question from Peskin & Schroeder Jul 2 awarded Curious Apr 29 awarded Yearling Apr 5 awarded Revival Mar 1 comment Fermion boundary conditions at finite temperature The relation $\rm{Tr} ~e^{-\beta \hat{H}} \hat{\psi}(x,\tau_1)\hat{\psi}(y.0) =\rm{Tr} ~e^{-\beta \hat{H}}\hat{\psi}(y.\beta) \hat{\psi}(x,\tau_1)$ shoud hold which is just the KMS relation. I use the cyclicity of the trace rather than exchange the fermion operators. Dec 18 revised Matrix integral in multi-matrix model edited tags Dec 11 comment Matrix integral in multi-matrix model @Qmechanic, I am very sorry for this. What should I do? Delete some of them? or... Dec 11 asked Matrix integral in multi-matrix model Dec 10 comment A Puzzle about $SO(3)$ Thanks for your patience. Dec 9 accepted A Puzzle about $SO(3)$ Dec 9 comment A Puzzle about $SO(3)$ It is a little weird for me. $SO(3)$ and $SU(2)$ have the same algebra while this algebra has different representations for each. May I infer that the representation of the algebra contains the information of its group which is not known from the algebra itself? Dec 8 comment Moduli Space of $\mathcal{N}=4$ SYM on $\mathbb{R} \times S^3$ CFT on $R\times S^3$ is still conformal. It is similar to world sheet radial quantization. The radius $S^3$ can be rescaled out by conformal invariance. More argument can be found in hep-th/9803131.