nigelscott
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I read that the canonical momentum for Dirac adjoint field is zero. Why is that?
Canonical momentum for Dirac adjoint field
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What does your calculation give you?
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You should be using the symmetrized „classical” action:
nigelscott
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I know that π = iψbarγ0. My confusion concerns the notion of the derivative in the Lagrangian 'acting to the right' for ψ or 'acting to the left' for ψbarγ0 . If I ignore that confusion then I can see that the canonical momentum would be 0.
nigelscott
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should be 'acting to the left' for ψbar