Abstract
It is known that, for Dirac operators on Riemann surfaces twisted by line bundles with Hermitian-Einstein connections, it is possible to obtain estimates for the first eigenvalue in terms of the topology of the twisting bundle [8]. Attempts to generalize topological estimates for higher rank bundles or higher dimensional manifolds have been so far unsuccessful. In this work, we construct a class of examples, making explicit one problem that must be addressed in attempts to generalize such topological estimates.
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de Freitas Leão, R. (1,1)-Forms Acting on Spinors on Kähler Surfaces. Adv. Appl. Clifford Algebras 25, 569–575 (2015). https://doi.org/10.1007/s00006-014-0525-6
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DOI: https://doi.org/10.1007/s00006-014-0525-6