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Display information for equation id:math.1621.19 on revision:1621
* Page found: Operatoren im Hilbertraum (eq math.1621.19)
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TeX (original user input):
\begin{align}
& \Phi :=\hat{\bar{r}}\left| \Psi \right\rangle \\
& \Phi (\bar{p})\equiv \left\langle {\bar{p}} | \Phi \right\rangle =\left\langle {\bar{p}} \right|\hat{\bar{r}}\left| \Psi \right\rangle \\
& \Phi (\bar{p})=\int_{{}}^{{}}{{{d}^{3}}r}\left\langle {\bar{p}} | {\bar{r}} \right\rangle \left\langle {\bar{r}} \right|\hat{\bar{r}}\left| \Psi \right\rangle \\
& \left\langle {\bar{p}} | {\bar{r}} \right\rangle =\frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}} \\
& \left\langle {\bar{r}} \right|\hat{\bar{r}}\left| \Psi \right\rangle =\bar{r}\left\langle {\bar{r}} | \Psi \right\rangle \\
& \Rightarrow \Phi (\bar{p})=\int_{{}}^{{}}{{{d}^{3}}r}\left\langle {\bar{p}} | {\bar{r}} \right\rangle \left\langle {\bar{r}} \right|\hat{\bar{r}}\left| \Psi \right\rangle =\int_{{}}^{{}}{{{d}^{3}}r}\frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}\bar{r}\Psi (\bar{r})=\frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}\int_{{}}^{{}}{{{d}^{3}}r}\bar{r}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}\Psi (\bar{r}) \\
& \bar{r}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}=-\frac{\hbar }{i}{{\nabla }_{p}}\left( {{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}} \right) \\
& {{\nabla }_{p}}:=\left( \begin{matrix}
\frac{\partial }{\partial {{p}_{x}}}, & \frac{\partial }{\partial {{p}_{y}}}, & \frac{\partial }{\partial {{p}_{z}}} \\
\end{matrix} \right) \\
& \Rightarrow \Phi (\bar{p})=\frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}\int_{{}}^{{}}{{{d}^{3}}r}\bar{r}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}\Psi (\bar{r})=-\frac{\hbar }{i}{{\nabla }_{p}}\left[ \int_{{}}^{{}}{{{d}^{3}}r\frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}\Psi (\bar{r}) \right] \\
& \frac{1}{{{\left( 2\pi \hbar \right)}^{\tfrac{3}{2}}}}{{e}^{-i\frac{\bar{p}\bar{r}}{\hbar }}}=\left\langle {\bar{p}} | {\bar{r}} \right\rangle \\
& \Rightarrow \Phi (\bar{p})=-\frac{\hbar }{i}{{\nabla }_{p}}\left[ \int_{{}}^{{}}{{{d}^{3}}r\left\langle {\bar{p}} | {\bar{r}} \right\rangle \left\langle {\bar{r}} | \Psi \right\rangle } \right]=-\frac{\hbar }{i}{{\nabla }_{p}}\tilde{\Psi }(\bar{p}) \\
\end{align}
TeX (checked):
{\begin{aligned}&\Phi :={\hat {\bar {r}}}\left|\Psi \right\rangle \\&\Phi ({\bar {p}})\equiv \left\langle {\bar {p}}|\Phi \right\rangle =\left\langle {\bar {p}}\right|{\hat {\bar {r}}}\left|\Psi \right\rangle \\&\Phi ({\bar {p}})=\int _{}^{}{{{d}^{3}}r}\left\langle {\bar {p}}|{\bar {r}}\right\rangle \left\langle {\bar {r}}\right|{\hat {\bar {r}}}\left|\Psi \right\rangle \\&\left\langle {\bar {p}}|{\bar {r}}\right\rangle ={\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}\\&\left\langle {\bar {r}}\right|{\hat {\bar {r}}}\left|\Psi \right\rangle ={\bar {r}}\left\langle {\bar {r}}|\Psi \right\rangle \\&\Rightarrow \Phi ({\bar {p}})=\int _{}^{}{{{d}^{3}}r}\left\langle {\bar {p}}|{\bar {r}}\right\rangle \left\langle {\bar {r}}\right|{\hat {\bar {r}}}\left|\Psi \right\rangle =\int _{}^{}{{{d}^{3}}r}{\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}{\bar {r}}\Psi ({\bar {r}})={\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}\int _{}^{}{{{d}^{3}}r}{\bar {r}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}\Psi ({\bar {r}})\\&{\bar {r}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}=-{\frac {\hbar }{i}}{{\nabla }_{p}}\left({{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}\right)\\&{{\nabla }_{p}}:=\left({\begin{matrix}{\frac {\partial }{\partial {{p}_{x}}}},&{\frac {\partial }{\partial {{p}_{y}}}},&{\frac {\partial }{\partial {{p}_{z}}}}\\\end{matrix}}\right)\\&\Rightarrow \Phi ({\bar {p}})={\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}\int _{}^{}{{{d}^{3}}r}{\bar {r}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}\Psi ({\bar {r}})=-{\frac {\hbar }{i}}{{\nabla }_{p}}\left[\int _{}^{}{{{d}^{3}}r{\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}\Psi ({\bar {r}})\right]\\&{\frac {1}{{\left(2\pi \hbar \right)}^{\tfrac {3}{2}}}}{{e}^{-i{\frac {{\bar {p}}{\bar {r}}}{\hbar }}}}=\left\langle {\bar {p}}|{\bar {r}}\right\rangle \\&\Rightarrow \Phi ({\bar {p}})=-{\frac {\hbar }{i}}{{\nabla }_{p}}\left[\int _{}^{}{{{d}^{3}}r\left\langle {\bar {p}}|{\bar {r}}\right\rangle \left\langle {\bar {r}}|\Psi \right\rangle }\right]=-{\frac {\hbar }{i}}{{\nabla }_{p}}{\tilde {\Psi }}({\bar {p}})\\\end{aligned}}
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data-mjx-texclass="ORD"><msup><mi>d</mi><mrow data-mjx-texclass="ORD"><mn>3</mn></mrow></msup><mi>r</mi></mrow><mover><mi>r</mi><mo>¯</mo></mover><msup><mi>e</mi><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mo stretchy="false">−</mo><mi>i</mi><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mover><mi>p</mi><mo>¯</mo></mover><mover><mi>r</mi><mo>¯</mo></mover></mrow></mrow><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow></mfrac></mrow></mrow></mrow></msup><mi>Ψ</mi><mo stretchy="false">(</mo><mover><mi>r</mi><mo>¯</mo></mover><mo stretchy="false">)</mo><mo stretchy="false">=</mo><mo stretchy="false">−</mo><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow><mrow data-mjx-texclass="ORD"><mi>i</mi></mrow></mfrac></mrow><msub><mi mathvariant="normal">∇</mi><mrow data-mjx-texclass="ORD"><mi>p</mi></mrow></msub><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">[</mo><msubsup><mo stretchy="false">∫</mo><mrow data-mjx-texclass="ORD"></mrow><mrow data-mjx-texclass="ORD"></mrow></msubsup><mrow data-mjx-texclass="ORD"><msup><mi>d</mi><mrow data-mjx-texclass="ORD"><mn>3</mn></mrow></msup><mi>r</mi><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mn>1</mn></mrow><mrow data-mjx-texclass="ORD"><msup><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">(</mo><mn>2</mn><mi>π</mi><mi alternate="1">ℏ</mi><mo data-mjx-texclass="CLOSE">)</mo></mrow><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mstyle displaystyle="false" scriptlevel="0"><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mn>3</mn></mrow><mrow data-mjx-texclass="ORD"><mn>2</mn></mrow></mfrac></mrow></mstyle></mrow></mrow></msup></mrow></mfrac></mrow></mrow><msup><mi>e</mi><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mo stretchy="false">−</mo><mi>i</mi><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mover><mi>p</mi><mo>¯</mo></mover><mover><mi>r</mi><mo>¯</mo></mover></mrow></mrow><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow></mfrac></mrow></mrow></mrow></msup><mi>Ψ</mi><mo stretchy="false">(</mo><mover><mi>r</mi><mo>¯</mo></mover><mo stretchy="false">)</mo><mo data-mjx-texclass="CLOSE">]</mo></mrow></mtd></mtr><mtr><mtd class="mwe-math-columnalign-r"></mtd><mtd class="mwe-math-columnalign-l"><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mn>1</mn></mrow><mrow data-mjx-texclass="ORD"><msup><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">(</mo><mn>2</mn><mi>π</mi><mi alternate="1">ℏ</mi><mo data-mjx-texclass="CLOSE">)</mo></mrow><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mstyle displaystyle="false" scriptlevel="0"><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mn>3</mn></mrow><mrow data-mjx-texclass="ORD"><mn>2</mn></mrow></mfrac></mrow></mstyle></mrow></mrow></msup></mrow></mfrac></mrow><msup><mi>e</mi><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mo stretchy="false">−</mo><mi>i</mi><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mrow data-mjx-texclass="ORD"><mover><mi>p</mi><mo>¯</mo></mover><mover><mi>r</mi><mo>¯</mo></mover></mrow></mrow><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow></mfrac></mrow></mrow></mrow></msup><mo stretchy="false">=</mo><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">⟨</mo><mover><mi>p</mi><mo>¯</mo></mover><mo stretchy="false">|</mo><mover><mi>r</mi><mo>¯</mo></mover><mo data-mjx-texclass="CLOSE">⟩</mo></mrow></mtd></mtr><mtr><mtd class="mwe-math-columnalign-r"></mtd><mtd class="mwe-math-columnalign-l"><mo stretchy="false">⇒</mo><mi>Φ</mi><mo stretchy="false">(</mo><mover><mi>p</mi><mo>¯</mo></mover><mo stretchy="false">)</mo><mo stretchy="false">=</mo><mo stretchy="false">−</mo><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow><mrow data-mjx-texclass="ORD"><mi>i</mi></mrow></mfrac></mrow><msub><mi mathvariant="normal">∇</mi><mrow data-mjx-texclass="ORD"><mi>p</mi></mrow></msub><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">[</mo><msubsup><mo stretchy="false">∫</mo><mrow data-mjx-texclass="ORD"></mrow><mrow data-mjx-texclass="ORD"></mrow></msubsup><mrow data-mjx-texclass="ORD"><msup><mi>d</mi><mrow data-mjx-texclass="ORD"><mn>3</mn></mrow></msup><mi>r</mi><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">⟨</mo><mover><mi>p</mi><mo>¯</mo></mover><mo stretchy="false">|</mo><mover><mi>r</mi><mo>¯</mo></mover><mo data-mjx-texclass="CLOSE">⟩</mo></mrow><mrow data-mjx-texclass="INNER"><mo data-mjx-texclass="OPEN">⟨</mo><mover><mi>r</mi><mo>¯</mo></mover><mo stretchy="false">|</mo><mi>Ψ</mi><mo data-mjx-texclass="CLOSE">⟩</mo></mrow></mrow><mo data-mjx-texclass="CLOSE">]</mo></mrow><mo stretchy="false">=</mo><mo stretchy="false">−</mo><mrow data-mjx-texclass="ORD"><mfrac><mrow data-mjx-texclass="ORD"><mi alternate="1">ℏ</mi></mrow><mrow data-mjx-texclass="ORD"><mi>i</mi></mrow></mfrac></mrow><msub><mi mathvariant="normal">∇</mi><mrow data-mjx-texclass="ORD"><mi>p</mi></mrow></msub><mover><mi>Ψ</mi><mo>~</mo></mover><mo stretchy="false">(</mo><mover><mi>p</mi><mo>¯</mo></mover><mo stretchy="false">)</mo></mtd></mtr><mtr><mtd class="mwe-math-columnalign-r"></mtd></mtr></mtable></mstyle></mrow></math>
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