Quantenphysik: Forschung, Theorien und Technologien | Gaya One

Raman anyon-Hubbard model in a 1D Bose lattice gas Josep Cabedo, Claudio Iacovelli, Leticia Tarruell, Alessio Celi arxiv.org/abs/2611.09855 [𝚌𝚘𝚗𝚍-𝚖𝚊𝚝.𝚚𝚞𝚊𝚗𝚝-𝚐𝚊𝚜 𝚚𝚞𝚊𝚗𝚝-𝚙𝚑]

$The anyon-Hubbard model is the paradigmatic lattice model of one-dimensional (1D) anyons, in which chiral interactions make bosons equivalent to particles with fractional statistics. Its continuum limit, the chiral BF theory, emerges as the low-energy description of a Raman-coupled Bose gas with imbalanced interactions. Here, we show that loading such a gas into a 1D optical lattice realizes the lattice counterpart of this theory, which we name the Raman anyon-Hubbard model. The Raman-dressed bosons acquire density-dependent Peierls phases when tunneling through occupied sites. For a small statistical phase, the model reduces to the anyon-Hubbard model, while beyond this limit it defines a distinct lattice anyon model with unbounded rather than periodic statistical interactions. Numerically, we show that the dressed gas displays the defining properties of 1D anyons, namely a density-dependent asymmetry of the ground-state momentum distribution, interaction-induced asymmetric transport$

7:57 AM · Nov 9, 2026

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