Exploring helical phases of matter in bosonic ladders
- URL: http://arxiv.org/abs/2010.02740v2
- Date: Tue, 12 Jan 2021 22:26:31 GMT
- Title: Exploring helical phases of matter in bosonic ladders
- Authors: Andreas Haller, Apollonas S. Matsoukas-Roubeas, Yueting Pan, Matteo
Rizzi and Michele Burrello
- Abstract summary: Strongly correlated helical states are known to appear for specific ratios of the particle and magnetic flux densities.
We show that one of them can be accessed in systems with two-species hardcore bosons and on-site repulsions only.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Ladder models of ultracold atoms offer a versatile platform for the
experimental and theoretical study of different phenomena and phases of matter
linked to the interplay between artificial gauge fields and interactions.
Strongly correlated helical states are known to appear for specific ratios of
the particle and magnetic flux densities and they can often be interpreted as a
one-dimensional limit of fractional quantum Hall states, thus being called
pretopological. Their signatures, however, are typically hard to observe due to
the small gaps characterizing these states. Here we investigate bosonic ladder
models at filling factor 1. Based on bosonization, renormalization group and
matrix product state simulations we pinpoint two strongly correlated helical
phases appearing at this resonance. We show that one of them can be accessed in
systems with two-species hardcore bosons and on-site repulsions only, thus
amenable for optical lattice experiments. Its signatures are sizable and stable
over a broad range of parameters for realistic system sizes.
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