http://en.wikipedia.org/wiki/Propagator(adsbygoogle = window.adsbygoogle || []).push({});

What does this equation mean:

[tex]

\Big(H_x - i\hbar\partial_t\Big) K(x,t,x',t') = -i\hbar\delta(x-x')\delta(t-t')

[/tex]

Wouldn't it be more relevant to emphasize these equations:

[tex]

\Big(H_x - i\hbar\partial_t\Big) K(x,t,x',t') = 0,\quad\quad t\neq t'

[/tex]

[tex]

K(x,t,x',t') = \delta(x-x'),\quad\quad t=t'

[/tex]

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# Propagator and delta functions

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