Journal
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS
Volume 75, Issue 2, Pages 550-558Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.na.2011.08.057
Keywords
Nonlocal interactions; Confinement; Gradient flows; Particle approximation
Categories
Funding
- DGI-MCI (Spain) [MTM2011-27739-C04-02]
- AGAUR-Generalitat de Catalunya [2009-SGR-345]
- Azioni Integrate Italia-Spagna [25]
- NSF [DMS-0969962, DMS-1109805, DMS-0638481, DMS-0908415]
- CNA (NSF) [DMS-0635983]
- PIRE NSF [OISE-0967140]
- ICREA Funding Source: Custom
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We investigate some dynamical properties of nonlocal interaction equations. We consider sets of particles interacting pairwise via a potential W, as well as continuum descriptions of such systems. The typical potentials we consider are repulsive at short distances, but attractive at long distances. The main question we consider is whether an initially localized configuration remains localized for all times, regardless of the number of particles or their arrangement. In particular we find sufficient conditions on the potential W for the above confinement property to hold. We use the framework of weak measure solutions developed in Carrillo et al. (2011) [2] to provide unified treatment of both particle and continuum systems. (C) 2011 Elsevier Ltd. All rights reserved.
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