{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Ma J"],"funding":["University of Hong Kong","National Natural Science Foundation of China","University of Hong Kong (HKU)","National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["2332"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10940314"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["15(1)"],"pubmed_abstract":["As hypothetical topological defects in the geometry of spacetime, vortex strings could have played many roles in cosmology, and their distinct features can provide observable clues about the early universe's evolution. A key feature of vortex strings is that they can interact with Weyl fermionic modes and support massless chiral-anomaly states along strings. To date, despite many attempts to detect vortex strings in astrophysics or to emulate them in artificially created systems, observation of these vortex-string chiral modes remains experimentally elusive. Here we report experimental observations of vortex-string chiral modes using a metamaterial system. This is implemented by inhomogeneous perturbation of Yang-monopole phononic metamaterials. The measured linear dispersion and modal profiles confirm the existence of topological modes bound to and propagating along the string with the chiral anomaly. Our work provides a platform for studying diverse cosmic topological defects in astrophysics and offers applications as topological fibres in communication techniques."],"journal":["Nature communications"],"pubmed_title":["Observation of vortex-string chiral modes in metamaterials."],"pmcid":["PMC10940314"],"funding_grant_id":["61975176","12174159","62175215","N_HKU750/22","12274183"],"pubmed_authors":["Sun HX","Yang Y","Jia D","Ge Y","Zhang X","Ma J","Zhang L","Chen H","Guan YJ","Yuan SQ"],"additional_accession":[]},"is_claimable":false,"name":"Observation of vortex-string chiral modes in metamaterials.","description":"As hypothetical topological defects in the geometry of spacetime, vortex strings could have played many roles in cosmology, and their distinct features can provide observable clues about the early universe's evolution. A key feature of vortex strings is that they can interact with Weyl fermionic modes and support massless chiral-anomaly states along strings. To date, despite many attempts to detect vortex strings in astrophysics or to emulate them in artificially created systems, observation of these vortex-string chiral modes remains experimentally elusive. Here we report experimental observations of vortex-string chiral modes using a metamaterial system. This is implemented by inhomogeneous perturbation of Yang-monopole phononic metamaterials. The measured linear dispersion and modal profiles confirm the existence of topological modes bound to and propagating along the string with the chiral anomaly. Our work provides a platform for studying diverse cosmic topological defects in astrophysics and offers applications as topological fibres in communication techniques.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2026-06-26T03:10:47.166Z","creation":"2026-06-26T03:08:02.804Z"},"accession":"S-EPMC10940314","cross_references":{"pubmed":["38485983"],"doi":["10.1038/s41467-024-46641-w"]}}