Minimum action solutions of some vector field equations |
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Authors: | Haim Brezis Elliott H. Lieb |
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Affiliation: | (1) Département de Mathématiques, Université Paris VI, 4, Place Jussieu, F-75230 Paris, Cédex 05, France;(2) Departments of Mathematics and Physics, Princeton University, P.O. Box 708, 08544 Princeton, NJ, USA |
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Abstract: | The system of equations studied in this paper is –ui=gi(u) on d,d2, withu:dn andgi(u)=G/ui. Associated with this system is the action,S(u)={1/2|u|2–G(u)}. Under appropriate conditions onG (which differ ford=2 andd3) it is proved that the system has a solution,u 0, of finite action and that this solution also minimizes the action within the class {v is a solution,v has finite action,v 0}.Work partially supported by U.S. National Science Foundation Grant PHY-81-16101-A02 |
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