強きょう結けつ合ごう

noun

strong coupling

Physics term referring to a regime where the interaction strength between particles or fields is large, often contrasted with weak coupling. Used in contexts such as quantum field theory, condensed matter, and particle physics.

• 強きょう結けつ合ごう領りょう域いきでは摂せつ動どう論ろんが使つかえない。

  Perturbation theory cannot be used in the strong coupling regime.

• この物ぶっ質しつは電でん子しとフォノンの強きょう結けつ合ごうを示しめす。

  This material exhibits strong coupling between electrons and phonons.