1. Dynamics and phase transitions in biased ladder systems with magnetic flux.
- Author
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Qiao, Xin, Zhang, Xiao-Bo, Zhang, Ai-Xia, Yu, Zi-Fa, and Xue, Ju-Kui
- Subjects
- *
MAGNETIC flux , *PHASE transitions - Abstract
• The ground states and the dynamics of the biased bosonic ladder are discussed. • The Meissner, Vortex and two new Plane Wave phases are predicted analytically. • Interestingly, the Plane Wave phases break both Z 2 and time-reversal symmetry. • Rich chiral Bolch oscillations are predicted to distinguish the novel phases. • The work gives an interesting way to explore phases in condensed physics dynamically. The ground states and the dynamics of a biased two-leg flux ladder in the presence of a gravitational field are discussed. In the absence of the gravitational field, the ground states and the critical condition of phase transition are obtained analytically. We identify the Meissner phase, Vortex phase, and interestingly, two new Plane Wave phases, that break both Z 2 and time-reversal symmetry, characterized by the imbalance particle density distribution, asymmetry double well energy band structure in Plane Wave I (PWI) phase and asymmetry single well energy band structure in Plane Wave II (PWII) phase, respectively. In the presence of a longitudinal dc gravitational field, rich chiral Bloch oscillation and Landau-Zener tunneling are predicted theoretically and confirmed numerically. The characteristics of the chiral Bloch oscillation can distinguish the novel phases intuitively. Our work gives an interesting way to discuss the quantum phase transitions in a dynamical way. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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