Dirac Equation in The Algebra of Physical Space - Second Order Dirac Equation

Second Order Dirac Equation

An application of the Dirac equation on itself leads to the second order Dirac equation

(-\partial \bar{\partial} + A \bar{A}) \Psi - i( 2e\left\langle A \bar{\partial} \right\rangle_S + eF) \Psi \mathbf{e}_3 = m^2 \Psi

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