Operators with singular continuous spectrum,VII. Examples with borderline time decay |
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Authors: | Barry Simon |
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Institution: | (1) Division of Physics, Mathematics, and Astronomy, California Institute of Technology, 253-37, 91125 Pasadena, CA, USA |
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Abstract: | We construct one-dimensional potentialsV(x) so that if
onL
2( ), thenH has purely singular spectrum; but for a dense setD, D implies that | ,e
-itH
| C
|t|-1/2 ln(|t|) for t >2. This implies the spectral measures have Hausdorff dimension one and also, following an idea of Malozemov-Molchanov, provides counterexamples to the direct extension of the theorem of Simon-Spencer on one-dimensional infinity high barriers.This material is based upon work supported by the National Science Foundation under Grant No. DMS-9401491. The Government has certain rights in this material. |
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Keywords: | |
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