Exploring helical phases of matter in bosonic ladders
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- PhysRevResearch.2.043433
Final published version, 2.53 MB, PDF document
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.
Original language | English |
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Article number | 043433 |
Journal | Physical Review Research |
Volume | 2 |
Number of pages | 20 |
DOIs | |
Publication status | Published - 29 Dec 2020 |
- Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons, Quantum Physics
Research areas
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