A Quantum Correction to the Momentum Distribution Function of Particles
- Autores: Lazarev Y.N.1
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Afiliações:
- All-Russia Research Zababakhin Institute of Technical Physics
- Edição: Volume 63, Nº 5 (2018)
- Páginas: 180-185
- Seção: Physics
- URL: https://journals.rcsi.science/1028-3358/article/view/192890
- DOI: https://doi.org/10.1134/S1028335818050087
- ID: 192890
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Resumo
On the basis of the solution to the equation for a single-particle density matrix, the momentum distribution is obtained for a light-particle impurity placed in an ordered system of heavy particles and interacting with them with the amplitude U0. The effect of the value of U0/T0 on the functional form of the momentum distribution is investigated. It is shown that the momentum-distribution function obtained within the perturbation theory up to the terms ~(U0/T0)2 retains its form also outside the region of applicability of the perturbation theory; however, the relative magnitude of the correction is much smaller than that given by the perturbation theory.
Sobre autores
Yu. Lazarev
All-Russia Research Zababakhin Institute of Technical Physics
Autor responsável pela correspondência
Email: yulaz47@gmail.com
Rússia, Snezhinsk, Chelyabinsk oblast, 4456770
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