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Zoekopdracht: faculteit: "UvA" en publicatiejaar: "1999"

AuteurBernd Kuckert
TitelLocalization regions of local observables
Uitgevers.n.
Jaar1999
FaculteitUvA
Instituut/afd.UvA: Universiteitsbibliotheek
TrefwoordenLocality, spectrum condition, wave equation, Jost-Lehmann-Dyson representation
SamenvattingExploiting the properties of the Jost-Lehmann-Dyson representation, it is shown that in 1+2 or more spacetime dimensions, a nonempty smallest localization region can be associated with each local observable in the sense of Araki, Haag, and Kastler. Necessary and sufficient conditions are given that observables with spacelike separated localization regions commute (locality of the net alone does not imply this yet).SR4350821419191919The Moduli Space of Abelian Varieties and the Singularities of the Theta Divisoruva/uba/fnwi/kvi114534Ciliberto;;C.;;van der Geer;;G.;;We give lower bounds on the codimension of the Andreotti-Mayer loci.SR4360821419191919On the expansion of the mean integrated squared error of a kernel density estimatoruva/uba/fnwi/kvi114555Van Es;;B.;;We give a new proof of the mean integrated squared error expansion for non smooth densities of Van Eeden. The proof exploits the Fourier representation of the mean integrated squared error.SR4370821419191919Hellinger and information processes in filtered experiments, part I: general conceptsuva/uba/fnwi/kvi114535Dzhaparidze;;Kacha;;Spreij;;Peter;;Valkeila;;Esko.;;In this paper we define randomized filtered experiments with an abstract parameter space and analyze some properties of this concept. To that end we introduce three special probability measures that dominate a given expirement, called geodesic measure, arithmetic and geometric mean measures, and a generalized Hellinger process for an abstract family of probability measures. We also introduce and analyze the Kullback-Leibler information process of a posterior distribution on the parameter space with respect to a prior and give an expression for this in terms of the concepts given above.SR4380821419191919Singular values of the Rogers-Ramanujan continued fractionuva/uba/fnwi/kvi114536Gee;;A.C.P.;;Honsbeek;;M;;Let $z\in\C$ be imaginary quadratic in the upper half plane. Then the Rogers-Ramanujan continued fraction evaluated at $q=e^{2\pi i z}$ is contained in a class field of $\Q(z)$. Ramanujan showed that for certain values of $z$, one can write these continued fractions as nested radicals. We use the Shimura reciprocity law to obtain such nested radicals whenever $z$ is imaginary quadratic.SR4390420519721972Blauwdruk voor overleving1-1/262uva/uba/fdrAmsterdamStichting Raad voor MilieudefensieM.D. Maandblad voor milieudefensie123782Goldsmith;;E.;;1020210;1;01;21122100;;;08;01;01-09-1977Jongejans-Meyer;;A.G.;;4400120519921992'Grand theories', Empirismus oder Pro-Theorie: Bewegungsforschung am Scheideweg2647805Heft 213921uva/uba/fmg/aissr1198801000114;1;01;25002100;25011200;;01;01;01-10-19764411120519911991Naar een libertair, democratisch en ecologisch socialisme64449uva/uba/fmg/aissrAmsterdamWetenschappelijk Bureau Groen Links907228805XGroen en links in de jaren negentig1198791000114;1;01;25002100;25011200;;01;01;01-10-1976Basset;;P.P.L.;Heinsius;;J.;4420821419191919On the combinatorics of infinitesimally rigid frameworksuva/uba/fnwi/kvi114556Laman;;G.;;Starting from a short survey of minimal infinitesimally rigid frameworks it is shown by an example that and why a two-dimensional characterization of them cannot be extended to higher dimensions just like that. The findings of a closer inspection of the interdependence of the rows of the relevant matrices are translated into the language of graph theory. A characterization of the said frameworks in graph theoretical terms follows. It is no longer restricted in dimension.SR4430821419191919Two Uniqueness Results on the Unruh Effect and on PCT-Symmetryuva/uba/fnwi/kvi114557Kuckert;;Bernd;;The Unruh effect and a closely related form of PCT-symmetry have been proved in general for finite-component Wightman fields by Bisognano and Wichmann. While this result incorporates most of the fields occurring in four-dimensional high-energy physics, there still are field theories of interest that are not covered (e.g., low-dimensional anyon fields or infinite-component fields).
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