= Pseudoclassical spinning particle
{title2=$\mathcal L=\dot x\cdot p+\tfrac i2\zeta\cdot\dot\zeta-\tfrac e2p^2-i\chi p\cdot\zeta$}
A pseudoclassical spinning particle supplements ordinary position and momentum by odd <Grassmann variables>. An even multiplier imposes $p^2=0$ and an odd multiplier imposes $p\cdot\zeta=0$. The odd symplectic term gives $\{\zeta^m,\zeta^n\}_{D}=-i\eta^{mn}$. Quantization represents these variables by a <Clifford algebra>, producing a spinor wavefunction.
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