Theory of bosons in two-leg ladders with large magnetic fields

  title={Theory of bosons in two-leg ladders with large magnetic fields},
  author={Ran Wei and Erich Mueller},
  journal={Physical Review A},
We calculate the ground state of a Bose gas trapped on a two-leg ladder where Raman-induced hopping mimics the effect of a large magnetic field. In the mean-field limit, where there are large numbers of particles per site, this maps onto a uniformly frustrated two-leg ladder classical spin model. The net particle current always vanishes in the ground state, but generically there is a finite "chiral current", corresponding to equal and opposite flow on the two legs. We vary the strength of the… 

Figures from this paper

Bosons with long range interactions on two-leg ladders in artificial magnetic fields
Motivated by experiments exploring the physics of neutral atoms in artificial magnetic fields, we study the ground state of bosons interacting with long range dipolar interactions on a two-leg
Quantum phase transitions of a two-leg bosonic ladder in an artificial gauge field
We consider a two leg bosonic ladder in a $U(1)$ gauge field with both interleg hopping and interleg repulsion. As a function of the flux, the interleg interaction converts the
Strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux
We perform a density-matrix renormalization-group study of strongly interacting bosons on a three-leg ladder in the presence of a homogeneous flux. Focusing on one-third filling, we explore the phase
Finite-temperature properties of interacting bosons on a two-leg flux ladder
Quasi-one-dimensional lattice systems such as flux ladders with artificial gauge fields host rich quantum-phase diagrams that have attracted great interest. However, so far, most of the work on these
Quantum phases of strongly interacting bosons on a two-leg Haldane ladder
We study the ground-state physics of a single-component Haldane model on a hexagonal two-leg ladder geometry with a particular focus on strongly interacting bosonic particles. We concentrate our
Dynamics and phase transitions in biased ladder systems with magnetic flux
Abstract 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
Spin-gap spectroscopy in a bosonic flux ladder
Ultracold bosonic atoms trapped in a two-leg ladder pierced by a magnetic field provide a minimal and quasi-one-dimensional instance to study the interplay between orbital magnetism and interactions.
Two-leg-ladder Bose-Hubbard models with staggered fluxes
We investigate the ground state properties of ultracold atoms trapped in a two-leg ladder potential in the presence of an artificial magnetic field in a staggered configuration. We focus on the
Quench dynamics of two-leg ladders with magnetic flux
Abstract The realization and detection of two-leg ladders with the interplay of the artificial gauge field provide an ideal platform for investigations of the quantum phase transition and quantum
Excitation spectrum and supersolidity of a two-leg bosonic ring ladder
We consider a system of weakly interacting bosons confined on a planar double lattice ring subjected to two artificial gauge fields. This system is known to display three phases, the Meissner phase