Physics:Dressed particle
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Short description: A particle together with excitations from other fields
In theoretical physics, the term dressed particle refers to a bare particle together with some excitations of other quantum fields that are physically inseparable from the bare particle. For example, a dressed electron includes the cloud of virtual electron–positron pairs and photons surrounding the original electron.
A further noteworthy example is represented by polaritons[1] in solid-state physics, dressed quasiparticles of dipolar excitations in a medium with photons.
In radiobiology, a dressed particle is a bare particle together with its Debye sphere that neutralizes its electric charge. Dressed particles are also often called clothed particles.
See also
References
- ↑ Hopfield, J. J. (1958). "Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals". Physical Review 112 (5): 1555–1567. doi:10.1103/PhysRev.112.1555. Bibcode: 1958PhRv..112.1555H.
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