Asymptotics of eigenvalues of non-self adjoint Schrödinger operators on a half-line

Details Asymptotics of eigenvalues of non-self adjoint Schrödinger operators on a half-line Asymptotics of eigenvalues of non-self adjoint Schrödinger operators on a half-line

2010-01-28

arxiv.org/abs/1001.5120v1

CMFT 10 (2010) 111-133.

Physics

Mathematical Physics

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Scientific paper

We study the eigenvalues of the non-self adjoint problem $-y^{\prime\prime}+V(x)y=E y$ on the half-line $0\leq x<+\infty$ under the Robin boundary condition at $x=0$, where $V$ is a monic polynomial of degree $\geq 3$. We obtain a Bohr-Sommerfeld-like asymptotic formula for $E_n$ that depends on the boundary conditions. Consequently, we solve certain inverse spectral problems, recovering the potential $V$ and boundary condition from the first $(m+2)$ terms of the asymptotic formula.

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