Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1103/PhysRevA.89.063612

Ключевые слова: Kinetics, Dissociation channels, Dissociation probability, Non-Hermitian Hamiltonians, Numerical approaches, One dimensional optical lattice, Potential barriers, Potential scattering, Scattering problems, Scattering

Аннотация: We consider a potential scattering of a Bose-Hubbard dimer in a one-dimensional optical lattice. A numerical approach based on an effective non-Hermitian Hamiltonian has been developed for solving the scattering problem. It allows us to compute the tunneling and dissociation probabilities for an arbitrary shape of the potential barrier and an arbitrary kinetic energy of the dimer. The developed approach has been used to address the problem of two-particle decay out of a trap. In particular, it is shown that the presence of dissociation channels significantly decreases the nonescape probability due to single-particle escape to those channels.

Журнал: PHYSICAL REVIEW A

Выпуск журнала: Vol. 89, Is. 6

ISSN журнала: 24699926

Место издания: COLLEGE PK

Издатель: AMER PHYSICAL SOC

• Maksimov D.N. (Kirensky Institute of Physics)
• Kolovsky A.R. (Siberian Federal University)

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