On essential self-adjointness, confining potentials & the Lp-Hardy inequality : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mathematics at Massey University, Albany, New Zealand
| dc.contributor.author | Ward, A. D. | |
| dc.date.accessioned | 2014-11-23T21:24:19Z | |
| dc.date.available | 2014-11-23T21:24:19Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | Let Ω be a domain in Rm with non-empty boundary and let H = -Δ + V be a Schrödinger operator defined on C[symbol](Ω) where V E L[symbol](Ω). We seek the minimal criteria on the potential V that ensures that H is essentially self-adjoint, i.e. that ensures the closed operator H is self-adjoint. Overcoming various technical problems, we extend the results of Nenciu & Nenciu in [1] to more general types of domain, specifically unbounded domains and domains whose boundaries are fractal. As a special case of an abstract condition we show that H is essentially self-adjoint provided that sufficiently close to the boundary [equation] where d(x) = dist(x;δΩ) and the right hand side of the above inequality contains a f nite number of logarithmic terms. The constant μ2(Ω ) appearing in (1) is the variational constant associated with the L2-Hardy inequality and is non-zero if and only if Ω admits the aforementioned inequality. Our results indicate that the existence of an L2-Hardy nequality, and the specific value of μ2(Ω), depend intimately on the (Hausdorff / Aikawa) dimension of the boundary. In certain cases where Ω is geometrically simple, this constant, as well as the constant `1' appearing in front of each logarithmic term, is shown to be optimal with regards to the essential self-adjointness of H. | en_US |
| dc.identifier.uri | http://hdl.handle.net/10179/5941 | |
| dc.identifier.wikidata | Q112907543 | |
| dc.identifier.wikidata-uri | https://www.wikidata.org/wiki/Q112907543 | |
| dc.language.iso | en | en_US |
| dc.publisher | Massey University | en_US |
| dc.rights | The Author | en_US |
| dc.subject | Lp-Hardy inequality | en_US |
| dc.subject | Non-empty boundary | en_US |
| dc.subject | Self-adjointness | en_US |
| dc.subject | Distance function | en_US |
| dc.title | On essential self-adjointness, confining potentials & the Lp-Hardy inequality : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mathematics at Massey University, Albany, New Zealand | en_US |
| dc.type | Thesis | en_US |
| massey.contributor.author | Ward, Adam | en_US |
| thesis.degree.discipline | Mathematics | en_US |
| thesis.degree.grantor | Massey University | en_US |
| thesis.degree.level | Doctoral | en_US |
| thesis.degree.name | Doctor of Philosophy (Ph.D.) | en_US |
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