Bulk-edge correspondence and the cobordism invariance of the index
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🧮 math-ph
math.KTmath.MP
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bulk-edgecobordismcorrespondenceindexinvariancetypedirectlyfollows
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We show that the bulk-edge correspondence for two-dimensional type A and type AII topological insulators follows directly from the cobordism invariance of the index.
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