4 papers
Two- and three-body bound states in one-dimensional Fermi bipolaron with three-body interaction
O. Hryhorchak, V. Pastukhov
We discuss the ground-state properties of two bosonic (or spin-1/2 fermionic in a singlet spin state) impurities immersed in a one-dimensional ideal Fermi gas with only the three-b…
Evolution of a single spin in ideal Bose gas at finite temperatures
O. Hryhorchak, G. Panochko, V. Pastukhov
We study the finite-temperature dynamics of non-interacting bosons with a single static spinful impurity immersed. A non-zero contact boson-impurity pairwise interaction is assumed…
One-dimensional tunneling of the two-body bound state
N. Shypka, O. Hryhorchak, V. Pastukhov
We consider bound and scattering states of the one-dimensional dimer formed by two coupled non-identical atoms when one of them also interacts with the zero-range potential located…
Four-body physics in low-dimensional bosons with three-body interaction
V. Polkanov, O. Hryhorchak, V. Pastukhov
The two-channel model for bosons with the three-body interaction is proposed. Similar to the Hamiltonian describing narrow Feshbach resonance in the two-body sector, our model incl…