Equilibrium problems for infinite dimensional vector potentials with external fields

Details Equilibrium problems for infinite dimensional vector potentials with external fields Equilibrium problems for infinite dimensional vector potentials with external fields

2009-11-04

arxiv.org/abs/0911.0901v1

Mathematics

Classical Analysis and ODEs

25 pages

Scientific paper

The study deals with a minimal energy problem in the presence of an external field over noncompact classes of vector measures of infinite dimension in a locally compact space. The components are positive measures (charges) satisfying certain normalizing assumptions and supported by given closed sets (plates) with the sign +1 or -1 prescribed such that oppositely signed sets are mutually disjoint, and the interaction matrix for the charges corresponds to an electrostatic interpretation of a condenser. For all positive definite kernels satisfying Fuglede's condition of consistency between the weak* and strong topologies, sufficient conditions for the existence of equilibrium measures are established and properties of their uniqueness, vague compactness, and continuity are studied. We also obtain variational inequalities for the weighted equilibrium potentials, single out their characteristic properties, and analyze continuity of the equilibrium constants.

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