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25 April 2024 |
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Comment on ''Exceptional points and double poles of the S matrix'' | C. Dembowski
; B. Dietz
; H.-D. Graef
; H. L. Harney
; A. Heine
; W. D. Heiss
; A. Richter
; | Date: |
25 Sep 2003 | Subject: | Chaotic Dynamics | nlin.CD | Affiliation: | Institut fuer Kernphysik, Technische Universitaet Darmstadt, Germany, Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany, Department of Physics, University of Stellenbosch, Matieland, South Africa | Abstract: | In a recent paper [Phys. Rev. E 67, 026204 (2003)], Rotter calculates the geometric phases that are picked up by the eigenvectors of a two-state quantum system when an exceptional point is encircled. In addition to the geometric phases observed by Dembowski et al. in a microwave cavity experiment [Phys. Rev. Lett. 86, 787 (2001)], she finds a phase factor of i. We show that Rotters results are inconsistent. | Source: | arXiv, nlin.CD/0309066 | Services: | Forum | Review | PDF | Favorites |
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