Ising antiferromagnet with ultracold bosonic mixtures confined in a harmonic trap

Abstract

We present accurate results based on Quantum Monte Carlo simulations of two-component bosonic systems on a square lattice and in the presence of an external harmonic confinement. Starting from hopping parameters and interaction strengths which stabilize the Ising antiferromagnetic phase in the homogeneous case and at half integer filling factor, we study how the presence of the harmonic confinement challenge the realization of such phase. We consider realistic trapping frequencies and number of particles, and establish under which conditions, i.e. total number of particles and population imbalance, the antiferromagnetic phase can be observed in the trap.

4 pages, 2 figures, accepted for publication on PRA as a Rapid Communication. The present version contains lighter low resolution images. For High resolution version please refer to Journal

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Cited by in corpus (10)

• Demixing Effects in Mixtures of Two Bosonic Species
• Dimer, trimer and FFLO liquids in mass- and spin-imbalanced trapped binary mixtures in one dimension
• Quantum Simulation of Competing Orders with Fermions in Quantum Optical Lattices
• Dynamical disentangling and cooling of atoms in bilayer optical lattices
• Delocalization effects, entanglement entropy and spectral collapse of boson mixtures in a double well
• Bose-Hubbard Models in Confining Potentials: An Inhomogeneous Mean-Field Theory
• Frustrated quantum Ising spins simulated by spinless bosons in a tilted lattice: from a quantum liquid to antiferromagnetic order
• Quantum phases of hardcore bosons in two coupled chains: A density matrix renormalization group study
• Interplay between exotic superfluidity and magnetism in a chain of four-component ultracold atoms
• Phase Separation of Superfluids in the Chain of Four-Component Ultracold Atoms