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Display information for equation id:math.1729.119 on revision:1729
* Page found: Zeitabhängige Störungsrechnung (eq math.1729.119)
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TeX (original user input):
\begin{align}
& {{c}_{n}}(t)=\left\langle n \right|\left| \Psi \right\rangle =\left\langle n \right|U(t,0)\left| {{n}_{0}} \right\rangle =\left\langle n \right|{{e}^{-\frac{i}{\hbar }{{{\hat{H}}}^{0}}t}}\left( 1-\frac{i}{\hbar }\int_{0}^{t}{d\tau }{{e}^{\frac{i}{\hbar }{{{\hat{H}}}^{0}}\tau }}{{{\hat{H}}}_{S}}^{1}{{e}^{-\frac{i}{\hbar }{{{\hat{H}}}^{0}}\tau }} \right)\left| {{n}_{0}} \right\rangle \\
& \Rightarrow {{c}_{n}}(t)={{e}^{-\frac{i}{\hbar }{{E}_{n}}t}}\left( {{\delta }_{n{{n}_{0}}}}-\frac{i}{\hbar }\int_{0}^{t}{d\tau }{{e}^{\frac{i}{\hbar }{{E}_{n}}\tau }}\left\langle n \right|{{{\hat{H}}}_{S}}^{1}\left| {{n}_{0}} \right\rangle {{e}^{-\frac{i}{\hbar }{{E}_{n0}}\tau }} \right) \\
& {{\delta }_{n{{n}_{0}}}}={{g}_{n}}^{(0)} \\
& -\frac{i}{\hbar }\int_{0}^{t}{d\tau }{{e}^{\frac{i}{\hbar }{{E}_{n}}\tau }}\left\langle n \right|{{{\hat{H}}}_{S}}^{1}\left| {{n}_{0}} \right\rangle {{e}^{-\frac{i}{\hbar }{{E}_{n0}}\tau }}=\varepsilon {{g}_{n}}^{(1)} \\
& {{c}_{n}}(t)={{e}^{-\frac{i}{\hbar }{{E}_{n}}t}}\left( {{\delta }_{n{{n}_{0}}}}-\frac{i}{\hbar }\int_{0}^{t}{d\tau }{{e}^{\frac{i}{\hbar }{{E}_{n}}\tau }}\left\langle n \right|{{{\hat{H}}}_{S}}^{1}\left| {{n}_{0}} \right\rangle {{e}^{-\frac{i}{\hbar }{{E}_{n0}}\tau }} \right)={{e}^{-\frac{i}{\hbar }{{E}_{n}}t}}{{g}_{n}}(t) \\
\end{align}
TeX (checked):
{\begin{aligned}&{{c}_{n}}(t)=\left\langle n\right|\left|\Psi \right\rangle =\left\langle n\right|U(t,0)\left|{{n}_{0}}\right\rangle =\left\langle n\right|{{e}^{-{\frac {i}{\hbar }}{{\hat {H}}^{0}}t}}\left(1-{\frac {i}{\hbar }}\int _{0}^{t}{d\tau }{{e}^{{\frac {i}{\hbar }}{{\hat {H}}^{0}}\tau }}{{\hat {H}}_{S}}^{1}{{e}^{-{\frac {i}{\hbar }}{{\hat {H}}^{0}}\tau }}\right)\left|{{n}_{0}}\right\rangle \\&\Rightarrow {{c}_{n}}(t)={{e}^{-{\frac {i}{\hbar }}{{E}_{n}}t}}\left({{\delta }_{n{{n}_{0}}}}-{\frac {i}{\hbar }}\int _{0}^{t}{d\tau }{{e}^{{\frac {i}{\hbar }}{{E}_{n}}\tau }}\left\langle n\right|{{\hat {H}}_{S}}^{1}\left|{{n}_{0}}\right\rangle {{e}^{-{\frac {i}{\hbar }}{{E}_{n0}}\tau }}\right)\\&{{\delta }_{n{{n}_{0}}}}={{g}_{n}}^{(0)}\\&-{\frac {i}{\hbar }}\int _{0}^{t}{d\tau }{{e}^{{\frac {i}{\hbar }}{{E}_{n}}\tau }}\left\langle n\right|{{\hat {H}}_{S}}^{1}\left|{{n}_{0}}\right\rangle {{e}^{-{\frac {i}{\hbar }}{{E}_{n0}}\tau }}=\varepsilon {{g}_{n}}^{(1)}\\&{{c}_{n}}(t)={{e}^{-{\frac {i}{\hbar }}{{E}_{n}}t}}\left({{\delta }_{n{{n}_{0}}}}-{\frac {i}{\hbar }}\int _{0}^{t}{d\tau }{{e}^{{\frac {i}{\hbar }}{{E}_{n}}\tau }}\left\langle n\right|{{\hat {H}}_{S}}^{1}\left|{{n}_{0}}\right\rangle {{e}^{-{\frac {i}{\hbar }}{{E}_{n0}}\tau }}\right)={{e}^{-{\frac {i}{\hbar }}{{E}_{n}}t}}{{g}_{n}}(t)\\\end{aligned}}
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