Matches in SemOpenAlex for { <https://semopenalex.org/work/W2894899237> ?p ?o ?g. }
- W2894899237 abstract "Strongly interacting bosons that live in a lattice with degeneracy in its lowest energy band experience frustration that can prevent the formation of a Bose-Einstein condensate. Such systems form an ideal playground to investigate spin-liquid behavior. We use the variational principle and the Chern-Simons technique of fermionization of hard-core bosons on Kagome lattice to find that below lattice filling fraction $nu=1/3$ the system favors a topologically ordered chiral spin-liquid state that is gapped in bulk, spontaneously breaks Time-Reversal Symmetry, and supports massless chiral bosonic edge mode. We construct the many-body variational wave function of the state and show that the corresponding energy coincides with the energy of the flat band. This result proves that the ground state of the system cannot stabilize a Bose condensate below $nu=1/3$. The fermionization and variational scheme we outline apply to any non-Bravais lattice. We distinguish between the roles played by the Chern-Simons gauge field in lattices with a flat band and those exhibiting a moat-like dispersion (which is degenerate along a closed contour in the reciprocal space). We also suggest experimental probes to differentiate the proposed ground state from a condensate." @default.
- W2894899237 created "2018-10-12" @default.
- W2894899237 creator A5080089397 @default.
- W2894899237 creator A5083043728 @default.
- W2894899237 date "2019-05-20" @default.
- W2894899237 modified "2023-10-09" @default.
- W2894899237 title "Fermionization of bosons in a flat band" @default.
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- W2894899237 doi "https://doi.org/10.1103/physrevb.99.174418" @default.
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