Stripes, Topological Order, and Deconfinement in a Planart−JzModel

2003/09/30 by J. Smakov, Jurij Šmakov, Cristian D. Batista +3 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.93.067201

published as Phys. Rev. Lett. 93, 067201 (2004) · 4 pages, 5 figures (2 in color). Final version

openalex publication_date 2004/08/02 · arxiv created 2004/08/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We determine the quantum phase diagram of a two-dimensional bosonic t-Jz model as a function of the lattice anisotropy gamma, using a quantum Monte Carlo loop algorithm. We show analytically that the low-energy sectors of the bosonic and the fermionic t-Jz models become equivalent in the limit of small gamma. In this limit, the ground state represents a static stripe phase characterized by a nonzero value of a topological order parameter. This phase remains up to intermediate values of gamma, where there is a quantum phase transition to a phase-segregated state or a homogeneous superfluid with dynamic stripe fluctuations depending on the ratio Jz/t.

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• Phase diagram of an anisotropic bosonict−Jmodel

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