Impurity self-energy in the strongly-correlated Bose systems
| Autor: | Panochko, Galyna, Pastukhov, Volodymyr, Vakarchuk, Ivan |
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| Rok vydání: | 2017 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1142/S0217979218500534 |
| Popis: | We proposed the non-perturbative scheme for calculation of the impurity spectrum in the Bose system at zero temperature. The method is based on the path-integral formulation and describes an impurity as a zero-density ideal Fermi gas interacting with Bose system for which the action is written in terms of density fluctuations. On the example of the $^3$He atom immersed in the liquid helium-4 a good consistency with experimental data and results of Monte Carlo simulations is shown. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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