Physics – Mathematical Physics
Scientific paper
2009-09-21
Physics
Mathematical Physics
23 pages, 1 figure
Scientific paper
We describe some new families of quasimodes for the Laplacian perturbed by
the addition of a potential formally described by a Dirac delta function. As an
application we find, under some additional hypotheses on the spectrum,
subsequences of eigenfunctions of Seba billiards that localise around a pair of
unperturbed eigenfunctions.
Keating Jon P.
Marklof Jens
Winn Brian
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