Abstract
We prove a conditional Wegner estimate for Schrödinger operators with random potentials of breather type. More precisely, we reduce the proof of the Wegner estimate to a scale free unique continuation principle. The relevance of such unique continuation principles has been emphasized in previous papers, in particular in recent years. We consider the standard breather model, meaning that the single site potential is the characteristic function of a ball or a cube. While our methods work for a substantially larger class of random breather potentials, we discuss in this particular paper only the standard model in order to make the arguments and ideas easily accessible.
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Acknowledgments
This work has been partially supported by the DFG under grant Eindeutige Fortsetzungsprinzipien und Gleichverteilungseigenschaften von Eigenfunktionen. It has also profited from interactions with Francisco Hoecker-Escuti, Ivica Nakić, Martin Tautenhahn and Christoph Schumacher. Part of these interactions have been supported by the binational German-Croatian DAAD project Scale-uniform controllability of partial differential equations.
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Täufer, M., Veselić, I. Conditional Wegner Estimate for the Standard Random Breather Potential. J Stat Phys 161, 902–914 (2015). https://doi.org/10.1007/s10955-015-1358-y
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DOI: https://doi.org/10.1007/s10955-015-1358-y