Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1103/PhysRevA.93.033626

Ключевые слова: Crystal lattices, Optical lattices, Phase transitions, Adiabatic passages, Bloch oscillations, Disordered state, Hard-core bosons, Intrinsic relation, Mott insulator state, Quantum phase transitions, Two Dimensional (2 D), Quantum theory

Аннотация: We discuss the quantum phase transition between the Mott-insulator state and the density-wave state of cold Bose atoms in a two-dimensional (2D) square lattice as the lattice is adiabatically tilted along one of its primary axes. It is shown that a small misalignment of the tilt drastically changes the result of the adiabatic passage and, instead of the density-wave state, one obtains a disordered state. An intrinsic relation of the problem to Bloch oscillations of hard-core bosons in a 2D lattice is illuminated.

Журнал: PHYSICAL REVIEW A

Выпуск журнала: Vol. 93, Is. 3

ISSN журнала: 24699926

Место издания: COLLEGE PK

Издатель: AMER PHYSICAL SOC

• Kolovsky A.R. (Siberian Federal University)

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