Who has seen a free photon?

  • Ojima Izumi
    Research Institute for Mathematical Sciences, Kyoto University
  • Saigo Hayato
    Nagahama Institute of the Bio-Science and Technology

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抄録

While the notion of the position of photons is indispensable in the quantum optical situations, it has been known in mathematical physics that any position operator cannot be denned for a massless free particle with a non-zero finite spin. This dilemma is resolved by introducing the "effective mass" of a photon due to the interaction with matter. The validity of this interpretation is confirmed in reference to the picture of "polariton", a basic notion in optical and solid physics.

収録刊行物

  • 素粒子論研究

    素粒子論研究 119 (4A), D180-D188, 2012

    素粒子論グループ 素粒子論研究 編集部

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