Topological defects are encountered in fields ranging from condensed-matter physics to cosmology. These broken-symmetry objects are intrinsically local, but theoretical work now suggests that non-local quantum superpositions of such local defects might arise in a quantum phase transition.
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Whaley, K. Topology in superposition. Nature Phys 8, 9–10 (2012). https://doi.org/10.1038/nphys2186
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DOI: https://doi.org/10.1038/nphys2186
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Light manipulation of nanoparticles in arrays of topological defects
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