2018-11-23から1日間の記事一覧
Problem 4-6 Show that $K(2,1) \rightarrow \delta(x_2-x_1)$ as $t_2\to t_1+0$. $ \def\ket#1{|#1\rangle} \def\bra#1{\langle#1|} \def\BK#1#2{\langle #1|#2\rangle} \def\BraKet#1#2#3{\langle#1|#2|#3\rangle} \def\ppdiff#1#2{\frac{\partial #1}{\p…