Nonselfadjoint Operators , Infinite Determinants , and Some Applications
Nonselfadjoint Operators , Infinite Determinants , and Some Applications
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非自共轭算子,无限行列式,以及一些应用
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
M. Zinchenko
中科院分区:
文献类型:
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作者:
F. Gesztesy;Y. Latushkin;M. Mitrea;M. Zinchenko
We study various spectral theoretic aspects of nonselfadjoint operators. Specifically, we consider a class of factorable nonselfadjoint perturbations of a given unperturbed nonselfadjoint operator and provide an in-depth study of a version of the Birman–Schwinger principle as well as local and global Weinstein–Aronszajn formulas. Our applications include a study of suitably symmetrized (modified) perturbation determinants of Schrödinger operators in dimensions n = 1, 2, 3 and their connection with Krein’s spectral shift function in twoand three-dimensional scattering theory. Moreover, we study an appropriate multi-dimensional analog of the celebrated formula by Jost and Pais that identifies Jost functions with suitable Fredholm (perturbation) determinants and hence reduces the latter to simple Wronski determinants.