释义 |
quasi-particle [¦kwä·zē ¦pard·ǝ·kǝl] PHYSICS An entity used in the description of a system of many interacting particles which has particlelike properties such as mass, energy, and momentum, but which does not exist as a free particle; examples are phonons and other elementary excitations in solids, and ``dressed'' helium-3 atoms in Landau's theory of liquid helium-3. |