Ambarzumyan Theorems for Dirac Operators

被引:0
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作者
Chuan-fu Yang
Feng Wang
Zhen-you Huang
机构
[1] Nanjing University of Science and Technology,Department of Applied Mathematics
关键词
inverse spectral problem; Dirac operator; vectorial Sturm-Liouville operator; Ambarzumyan’s theorem; 34L05; 65L09;
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摘要
We consider the inverse eigenvalue problems for stationary Dirac systems with differentiable self-adjoint matrix potential. The theorem of Ambarzumyan for a Sturm-Liouville problem is extended to Dirac operators, which are subject to separation boundary conditions or periodic (semi-periodic) boundary conditions, and some analogs of Ambarzumyan’s theorem are obtained. The proof is based on the existence and extremal properties of the smallest eigenvalue of corresponding vectorial Sturm-Liouville operators, which are the second power of Dirac operators.
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页码:287 / 298
页数:11
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