| Autor: |
Joseph, Collin Mark, Meyer, Ralf |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
J. Math. Phys. 64 (2023), Paper No. 053504 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/5.0136854 |
| Popis: |
We describe explicit generators for the "real" K-theory of "real" spheres in van Daele's picture. Pulling these generators back along suitable maps from tori to spheres produces a family of Hamiltonians used in the physics literature on topological insulators. We compute their K-theory classes geometrically, based on wrong-way functoriality of K-theory and the geometric version of bivariant K-theory, which we extend to the "real" case. |
| Databáze: |
arXiv |
| Externí odkaz: |
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