Question
Operate on (5.7) with $\gamma^{\nu} \partial_{\nu}$ and show that each of the four components $\psi_{i}$ satisfies the Klein-Gordon equation$$\left(\square^{2}+m^{2}\right) \psi_{i}=0 .$$
Step 1
7), which is typically a Dirac equation for a spinor field \(\psi\). The Dirac equation can be written as: \[ (i \gamma^{\nu} \partial_{\nu} - m) \psi = 0. \] Show more…
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