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Author(s):
H. Nakamura, N. Hatano, S. Garmon and T. Petrosky-
Title:
Quasi-bound States in Continuum
Date of publication:
Aug. 2007
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Key words:
Resonance, open quantum system, complex eigenvalue, effective potential
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Abstract:
We report the prediction of quasi-bound states (resonant states with very
long lifetimes) that occur in the eigenvalue continuum of propagating states
for a wide region of parameter space. These quasi-bound states are generated
in a quantum wire with two channels and an adatom, when the energy bands of
the two channels overlap. A would-be bound state that lays just below the
upper energy band is slightly destabilized by the lower energy band and
thereby becomes a resonant state with a very long lifetime (a second QBIC
lays above the lower energy band)..
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