Search results with tag "Annihilation operators"

1 Introduction 2 Creation and Annihilation Operators

momentum k andspinprojections; the annilation operator a ks removes one. Notethatφ k(x)istheamplitudeatx tofindaparticleaddedbya ks Nowconsidertheoperator: ψ† s (x)≡ k e−ik·x V a† ks. (49) This operator adds a particle in a superpositon of momentum states with

  Operator, Particles, Annihilation operators, Annihilation