Quantum phase transitions in two-dimensional tilted optical lattices
URI (for links/citations):http://elib.sfu-kras.ru/handle/2311/27995
Kolovsky, A. R.
Институт инженерной физики и радиоэлектроники
Кафедра теоретической физики и волновых явлений
Journal Name:Physical Review A
Journal Quartile in Scopus:Q1
Journal Quartile in Web of Science:Q1
Bibliographic Citation:Kolovsky, A. R. Quantum phase transitions in two-dimensional tilted optical lattices [Текст] / A. R. Kolovsky // Physical Review A. — 2016. — Т. 93. — С. 033626
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.