D.L. Whitenack Linear response theory of uniformly complex-scaled many-body systems Annalen der Physik 524
Linear response functions for a uniformly complex-scaled many-body system are derived. Differences between these functions and their Hermitian analogs are emphasized including additional poles at metastable excitations. Energy absorption is investigated and it is shown how a complex-scaled external perturbation and its complex-conjugate couples to the system's energy and lifetime.
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