Sppose that V(x) is an exponentially localized potential and L is a constant coefficient differential operator. A method for computing the spectrum of L+V(x-x(1))+ ... +V(x-x(N)) given that one knows the spectrum of L+V(x) is described. The method is functional theoretic in nature and does not rely heavily on any special structure of L or V apart from the exponential localization. The result is aimed at applications involving the existence and stability of multi-pulses in partial differential equations.
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Title
ON THE SPECTRUM OF THE SUPERPOSITION OF SEPARATED POTENTIALS
Creators
J. Douglas Wright
Drexel University, Department of Mathematics, 3141 Chestnut Ave, Philadelphia, PA 19104
Publication Details
Discrete and continuous dynamical systems. Series B, v 18(1), pp 273-281
Publisher
Amer Inst Mathematical Sciences-Aims
Number of pages
9
Grant note
DMS 0807738; DMS 0908299; DMS 1105635 / NSF; National Science Foundation (NSF)
1105635 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
Resource Type
Journal article
Language
English
Academic Unit
Mathematics
Web of Science ID
WOS:000310573900015
Scopus ID
2-s2.0-84868541123
Other Identifier
991019174750104721
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