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Semiclassical Description of Relativistic Spin without use of Grassmann variables and the Dirac equation
Relativistic Spin Grassmann variables Dirac equation
2011/9/29
Abstract: We propose the relativistic particle model without Grassmann variables which, being canonically quantized, leads to the Dirac equation. Both $\Gamma$\,-matrices and the relativistic spin-ten...
Semiclassical description of quantum perturbations
quantum perturbations Semiclassical description local density of states
2010/4/8
The effect of a perturbation over a quantum system is described by the local density of states (LDOS), a distribution of the overlaps square between the unperturbed and perturbed eigenstates. Its witd...