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Article

Bunke, Ulrich
Comparison of Dirac operators on manifolds with. (English). In: Bureš, J. and Souček, V. (eds.): Proceedings of the Winter School "Geometry and Physics". Circolo Matematico di Palermo, Palermo, 1993. pp. [133]-141
MSC: 47F05, 58G20, 58G25, 58J32 | MR 1246627 | Zbl 0797.58084
Summary:
The author introduces boundary conditions for Dirac operators $D$ giving selfadjoint extensions such that the Hamiltonians $H = D\sp 2$ define elliptic operators. Using finite propagation speed methods and assuming bounded geometry he estimates the trace of the difference of two heat operators $e\sp{-tH}$ associated to a pair of Dirac operators coinciding on cocompact sets.
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