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arxiv: 0712.3120 · v1 · submitted 2007-12-19 · 🧮 math-ph · math.MP

Trace formulae for dissipative and coupled scattering systems

classification 🧮 math-ph math.MP
keywords dissipativeextensionfunctionscatteringsystemsabstractbirman-kreinconsisting
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For scattering systems consisting of a (family of) maximal dissipative extension(s) and a selfadjoint extension of a symmetric operator with finite deficiency indices, the spectral shift function is expressed in terms of an abstract Titchmarsh-Weyl function and a variant of the Birman-Krein formula is proved.

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