Supersymmetry in Elementary Particle Physics · Problem 2.3

Formalism of Supersymmetry

Physics — Particle Physics · susy-commutation-relation-psi

Problem

Using the Fierz identity ηαξβ†=−12(ξ†σˉmη)σαβm,\eta_\alpha \xi^\dagger_\beta = -\frac{1}{2}(\xi^\dagger \bar{\sigma}^m \eta)\sigma^m_{\alpha\beta} , verify that the SUSY commutation relation [δξ,δη][\delta_\xi, \delta_\eta] applied to ψ\psi takes the correct form [δξ,δη]=2i(ξ†σˉmη−η†σˉmξ)∂m.[\delta_\xi, \delta_\eta] = 2i\left(\xi^\dagger \bar{\sigma}^m \eta - \eta^\dagger \bar{\sigma}^m \xi\right)\partial_m .

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