Editing Weitere Eigenschaften der Dirac-Gleichung
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Latest revision | Your text | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\begin{align} | |||
& \rho :={{\Psi }^{+}}\Psi =\sum\limits_{k=1}^{4}{\Psi _{k}^{*}{{\Psi }_{k}}} \\ | & \rho :={{\Psi }^{+}}\Psi =\sum\limits_{k=1}^{4}{\Psi _{k}^{*}{{\Psi }_{k}}} \\ | ||
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{{NumBlk|:|(Kontinuitätsgleichung) | {{NumBlk|:|(Kontinuitätsgleichung) | ||
<math>\Rightarrow {{\partial }_{t}}\rho +\underline{\nabla }\underline{j}=0</math> | |||
: |(1.47)|RawN=.}} | : |(1.47)|RawN=.}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>{{\gamma }^{0}}:=\beta =\left( \begin{matrix} | |||
{\underline{\underline{1}}} & {\underline{\underline{0}}} \\ | {\underline{\underline{1}}} & {\underline{\underline{0}}} \\ | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\begin{align} | |||
& {{\left( {{\gamma }^{0}} \right)}^{+}}={{\gamma }^{0}},{{\left( {{\gamma }^{0}} \right)}^{2}}=1 \\ | & {{\left( {{\gamma }^{0}} \right)}^{+}}={{\gamma }^{0}},{{\left( {{\gamma }^{0}} \right)}^{2}}=1 \\ | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>{{x}^{\mu }}\leftrightarrow \left( {{x}^{0}},{{x}^{1}},{{x}^{2}},{{x}^{3}} \right):=\left( ct,x,y,z \right)=\left( ct,\underline{x} \right)</math> | |||
: |(1.50)|RawN=.}} | : |(1.50)|RawN=.}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>{{x}_{\mu }}=\left( {{x}_{0}},{{x}_{1}},{{x}_{2}},{{x}_{3}} \right):=\left( ct,-x,-y,-z \right)=\left( ct,-\underline{x} \right)</math> | |||
: |(1.51)|RawN=.}} | : |(1.51)|RawN=.}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>{{x}_{\mu }}{{x}^{\mu }}=\sum\limits_{\mu =0}^{4}{{{x}_{\mu }}{{x}^{\mu }}={{c}^{2}}{{t}^{2}}-{{{\underline{x}}}^{2}}}</math> | |||
: |(1.52)|RawN=.}} | : |(1.52)|RawN=.}} | ||
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* Lorentz-Transformation wie in (1.11) (Bewegung in x-Richtung) | * Lorentz-Transformation wie in (1.11) (Bewegung in x-Richtung) | ||
* | * | ||
<math>\begin{align} | |||
& ct'=\gamma ct-\gamma \beta x \\ | & ct'=\gamma ct-\gamma \beta x \\ | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\begin{align} | |||
& {{\partial }^{\nu }}=\frac{\partial }{\partial {{x}_{\nu }}}\quad \text{kontravarianter Vierergradient} \\ | & {{\partial }^{\nu }}=\frac{\partial }{\partial {{x}_{\nu }}}\quad \text{kontravarianter Vierergradient} \\ | ||
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Die Dirac-Gleichung folgt aus | Die Dirac-Gleichung folgt aus | ||
<math>\begin{align} | |||
& \left( \mathfrak{i} {{\partial }_{t}}-\underline{\alpha }\frac{1}{\mathfrak{i} }\underline{\nabla }-\beta m \right)\Psi =0\quad |\centerdot \beta \\ | & \left( \mathfrak{i} {{\partial }_{t}}-\underline{\alpha }\frac{1}{\mathfrak{i} }\underline{\nabla }-\beta m \right)\Psi =0\quad |\centerdot \beta \\ | ||
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{{NumBlk|:|{{FB|Dirac-Gleichung}} | {{NumBlk|:|{{FB|Dirac-Gleichung}} | ||
<math>\left( \mathfrak{i} {{\gamma }^{\mu }}{{\partial }_{\mu }}-m \right)\Psi =0</math> | |||
: |(1.56)|RawN=.|Border=1}} | : |(1.56)|RawN=.|Border=1}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\left( \mathfrak{i} {{\gamma }^{\nu }}{{\partial }_{\nu }}-m \right)\Psi =0\ \left( \text{in S} \right)\quad \left( \mathfrak{i} \gamma {{'}^{\nu }}\partial {{'}_{\nu }}-m' \right)\Psi '=0\ \left( \text{in S }\!\!'\!\!\text{ } \right)</math> | |||
: |(1.57)|RawN=.}} | : |(1.57)|RawN=.}} | ||
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Ableitung | Ableitung | ||
<math>\partial {{'}_{\mu }}=\frac{\partial }{\partial x{{'}^{\mu }}}=\frac{\partial x{{'}^{\nu }}}{\partial {{x}^{\mu }}}\frac{\partial }{\partial {{x}^{\nu }}}={{\left( {{L}^{-1}} \right)}^{\nu }}_{\mu }{{\partial }_{\nu }}</math> | |||
Wellenfunktion (4er Spinor) <math>\Psi '\left( x' \right)=\underbrace{S}_{\in {{M}^{4x4}}}\Psi \left( x \right)</math> | Wellenfunktion (4er Spinor) <math>\Psi '\left( x' \right)=\underbrace{S}_{\in {{M}^{4x4}}}\Psi \left( x \right)</math> | ||
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Selbe Ableitung der Dirac-Gleichung | Selbe Ableitung der Dirac-Gleichung | ||
<math>\gamma {{'}^{\nu }}={{\gamma }^{\nu }}</math> | |||
Also muss gelten | Also muss gelten | ||
<math>\left( \mathfrak{i} \gamma {{'}^{\nu }}\partial {{'}_{\nu }}-m' \right)\Psi '=0\Rightarrow \left( \mathfrak{i} {{\gamma }^{\nu }}{{\left( {{L}^{-1}} \right)}^{\mu }}_{\nu }{{\partial }_{\mu }}-m \right)S\Psi =0</math> | |||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\Rightarrow {{S}^{-1}}{{\gamma }^{\alpha }}S={{L}^{\alpha }}_{\mu }{{\gamma }^{\mu }}</math> | |||
: |(1.58)|RawN=.}} | : |(1.58)|RawN=.}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\left( {{\gamma }^{\mu }}{{k}_{\mu }}-m \right)\underbrace{\left( {{\gamma }^{\nu }}{{k}_{\nu }}+m \right)\left( \begin{align} | |||
& 0 \\ | & 0 \\ | ||
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\end{align} \right)}_{{{{\tilde{\phi }}}_{-}}}=0</math> | \end{align} \right)}_{{{{\tilde{\phi }}}_{-}}}=0</math> | ||
<math>\begin{align} | |||
& -{{{\tilde{\phi }}}_{-}}=-\left( E+m \right)\left( \begin{align} | & -{{{\tilde{\phi }}}_{-}}=-\left( E+m \right)\left( \begin{align} | ||
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{{NumBlk|:|(Viererstromdichte{{FB|Viererstromdichte}}) | {{NumBlk|:|(Viererstromdichte{{FB|Viererstromdichte}}) | ||
<math>{{j}^{\mu }}={{\Psi }^{+}}{{\gamma }^{0}}{{\gamma }^{\mu }}\Psi </math> | |||
: |(1.62)|RawN=.}} | : |(1.62)|RawN=.}} | ||
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{{NumBlk|:|(Kontinuitätsgleichung{{FB|Kontinuitätsgleichung}}) | {{NumBlk|:|(Kontinuitätsgleichung{{FB|Kontinuitätsgleichung}}) | ||
<math>{{\partial }_{\mu }}{{j}^{\mu }}=0</math> | |||
: |(1.63)|RawN=.}} | : |(1.63)|RawN=.}} | ||
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{{NumBlk|:| | {{NumBlk|:| | ||
<math>\partial {{'}_{\mu }}=\frac{\partial }{\partial x{{'}^{\mu }}}=\frac{\partial x{{'}^{\nu }}}{\partial {{x}^{\mu }}}\frac{\partial }{\partial {{x}^{\nu }}}={{\left( {{L}^{-1}} \right)}^{\nu }}_{\mu }{{\partial }_{\nu }}</math> | |||
: |(1.64)|RawN=.}} | : |(1.64)|RawN=.}} | ||
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: |(1.65)|RawN=.}} | : |(1.65)|RawN=.}} | ||
<math>\partial {{'}_{\mu }}j{{'}^{\mu }}=\underbrace{{{\left( {{L}^{-1}} \right)}^{\nu }}_{\mu }{{\partial }_{\nu }}{{L}^{\mu }}_{\alpha }}_{{{\delta }^{\nu }}_{\alpha }}{{j}^{\alpha }}={{\partial }_{\nu }}{{j}^{\nu }}=0</math> | |||
→ | → | ||
Lorentz-Invarianz von | Lorentz-Invarianz von | ||
<math>{{\partial }_{\mu }}{{j}^{\mu }}</math> |