| Autor: |
G. Panochko, V. Pastukhov, I. Vakarchuk |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Condensed Matter Physics, Vol 20, Iss 1, p 13604 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1607-324X |
| DOI: |
10.5488/CMP.20.13604 |
| Popis: |
We studied the properties of a single impurity atom immersed in a dilute Bose condensate at low temperatures. In particular, we perturbatively obtained the momentum dependence of the impurity spectrum and damping. By means of the Brillouin-Wigner perturbation theory we also calculated the self-energy both for attractive and repulsive polaron in the long-wavelength limit. The stability problem of the impurity atom in a weakly-interacting Bose gas is also examined. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
