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QUASIPARTICLE [1 record]

Record 1 2014-11-28

English

Subject field(s)
  • Atomic Physics
DEF

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.

OBS

Examples are phonons and other elementary excitations in solids, and "dressed" helium-3 atoms in Landau's theory of liquid helium-3.

PHR

Anyon quasiparticle.

French

Domaine(s)
  • Physique atomique
DEF

Excitation élémentaire d'un système physique comportant un grand nombre de particules.

Spanish

Campo(s) temático(s)
  • Física atómica
CONT

En un material, un electrón ejerce fuerzas sobre los otros constituyentes y crea una pequeña bolsa de perturbación en su vecindad. Las excitaciones básicas que se producen en un material podrían no comportarse en absoluto como los electrones u otras partículas elementales en el vacío. De ahí que se les llama cuasipartículas.

PHR

Cuasipartícula alónica.

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