A Pseudodifferential Analytic Perspective on Getzler's Rescaling
Inspired by Gilkey's invariance theory, Getzler's rescaling method, and Scott's approach to the index via Wodzicki residues, we give a localisation formula for the ℤ₂ -graded Wodzicki residue of the logarithm of a class of differential operators acting on sections of a spinor bundle o...
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| Veröffentlicht in: | Symmetry, Integrability and Geometry: Methods and Applications |
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| Datum: | 2024 |
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Інститут математики НАН України
2024
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/212113 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | A Pseudodifferential Analytic Perspective on Getzler's Rescaling. Georges Habib and Sylvie Paycha. SIGMA 20 (2024), 010, 34 pages |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Inspired by Gilkey's invariance theory, Getzler's rescaling method, and Scott's approach to the index via Wodzicki residues, we give a localisation formula for the ℤ₂ -graded Wodzicki residue of the logarithm of a class of differential operators acting on sections of a spinor bundle over an even-dimensional manifold. This formula is expressed in terms of another local density built from the symbol of the logarithm of a limit of rescaled differential operators acting on differential forms. When applied to complex powers of the square of a Dirac operator, it amounts to expressing the index of a Dirac operator in terms of a local density involving the logarithm of the Getzler rescaled limit of its square.
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| ISSN: | 1815-0659 |