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Paper   IPM / Physic / 6507
School of Physics
  Title:   On the Position Operator for Massless Particles
1.  A. Shojai
2.  M. Golshani
  Status:   Published
  Journal: Annales de la Foundation Louis de Broglie
  No.:  81
  Vol.:  22
  Year:  1997
  Pages:   373-382
  Supported by:  IPM
It is commonly stated that the position operator for massless particles has non-comutting components. To account for this, we have shown that the commutation relations between coordinates and momenta differ for massive and massless particles. Here we find a position operator for massless particles which has commuting components.

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