Abstract
For a purely imaginary sign-definite perturbation of a self-adjoint operator, we obtain exponential representations for the perturbation determinant in both upper and lower half-planes and derive respective trace formulas.
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Anna Skripka’s research was supported in part by National Science Foundation Grant DMS–1249186. Maxim Zinchenko’s research was supported in part by Simons Foundation Grant CGM–281971.
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Makarov, K.A., Skripka, A. & Zinchenko, M. On a Perturbation Determinant for Accumulative Operators. Integr. Equ. Oper. Theory 81, 301–317 (2015). https://doi.org/10.1007/s00020-014-2212-3
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DOI: https://doi.org/10.1007/s00020-014-2212-3