Dynamical Aharonov-Bohm cages and tight meson confinement in a Z2-loop gauge theory
Low-dimensional lattice gauge theories based on simplified gauge groups have emerged as relevant models of charge-confinement that can potentially be realized with quantum simulators. The intertwined dynamics of matter and gauge fields can result in quantum phases of the confined matter that have no...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:dnet:digitalcsic_::d99e628091424441b0a17713f2c7e68c |
| Acceso en línea: | http://hdl.handle.net/10261/427518 https://www.scopus.com/inward/record.uri?eid=2-s2.0-105014718897&doi=10.1038%2Fs42005-025-02284-x&partnerID=40&md5=5b8de119f1a17d90dd058d0c8e42e884 |
| Access Level: | acceso abierto |
| Palabra clave: | Bosons Electric fields Gages Lattice theory Quantum chemistry Quantum electronics Charge confinement Finite density Gauge fields Gauge group Gauge theory Lattice gauge theory Low dimensional Matter field Quantum phase Quantum simulators Trapped ions |
| Sumario: | Low-dimensional lattice gauge theories based on simplified gauge groups have emerged as relevant models of charge-confinement that can potentially be realized with quantum simulators. The intertwined dynamics of matter and gauge fields can result in quantum phases of the confined matter that have not yet been fully explored, especially in connection to the underlying mechanisms behind confinement. Here we study the finite-density phases of a Z2 lattice gauge theory of interconnected loops and dynamical Z2 charges. We show that the gauge-magnetic flux threading each loop is responsible for a phenomenon of dynamical Aharonov-Bohm caging, determining the confinement of particles into tightly-bound charge-neutral pairs, the Z2 analogue of mesons. The latter are trapped inside the cages, which become mobile by adding quantum fluctuations through an external electric field. These tightly-bound mesons can either propagate, manifesting a Luttinger liquid behaviour, or form an incompressible Mott insulator. In light of recent trapped-ion experiments for a single Z2 loop, these phases could be explored in future experiments. © The Author(s) 2025. |
|---|