
The Guest Editors for this special issue are
Alexander A. Andrianov (Universitat de Barcelona, Spain and Saint Petersburg State University, Russia)
Carl M. Bender (Washington University, St. Louis, USA)
Hugh F. Jones (Imperial College London, UK)
Andrei Smilga (Universite de Nantes, France)
Miloslav Znojil (Nuclear Physics Institute, Rez, Czech Republic)
The present collection includes papers by participants of the VIIth Workshop
“Quantum Physics with NonHermitian Operators”, held at Benasque, Spain, June 29 − July 11, 2008.
The issue contains 11 papers with the total of 210 pages.
We would like to thank all the authors who have published papers in
the issue, and to give our special thanks to all the referees for
providing constructive reviews.
The Guest Editors
Papers in this Issue:

NonHermitian Quantum Systems and TimeOptimal Quantum Evolution

Alexander I. Nesterov
SIGMA 5 (2009), 069, 17 pages [ abs
pdf ps ]

Hidden Symmetry from Supersymmetry in OneDimensional Quantum Mechanics

Alexander A. Andrianov and Andrey V. Sokolov
SIGMA 5 (2009), 064, 26 pages [ abs
pdf ps ]

An Alternative Canonical Approach to the Ghost Problem in a Complexified Extension of the PaisUhlenbeck Oscillator

A. Déctor, H.A. MoralesTécotl, L.F. Urrutia and J.D. Vergara
SIGMA 5 (2009), 053, 22 pages [ abs
pdf ps ]

PT Symmetry and QCD: Finite Temperature and Density

Michael C. Ogilvie and Peter N. Meisinger
SIGMA 5 (2009), 047, 14 pages [ abs
pdf ps ]

The Analytic Continuation of the LippmannSchwinger Eigenfunctions, and Antiunitary Symmetries

Rafael de la Madrid
SIGMA 5 (2009), 043, 14 pages [ abs
pdf ps ]

Intertwining Symmetry Algebras of Quantum Superintegrable Systems

Juan A. Calzada, Javier Negro and Mariano A. del Olmo
SIGMA 5 (2009), 039, 23 pages [ abs
pdf ps ]

Inverse Spectral Problems for Tridiagonal N by N Complex Hamiltonians

Gusein Sh. Guseinov
SIGMA 5 (2009), 018, 28 pages [ abs
pdf ps ]

Comments on the Dynamics of the PaisUhlenbeck Oscillator

Andrei V. Smilga
SIGMA 5 (2009), 017, 13 pages [ abs
pdf ps ]

On the Spectrum of a Discrete NonHermitian Quantum System

Ebru Ergun
SIGMA 5 (2009), 007, 24 pages [ abs
pdf ps ]

Generalized Nonanalytic Expansions, PTSymmetry and LargeOrder Formulas for Odd Anharmonic Oscillators

Ulrich D. Jentschura, Andrey Surzhykov and Jean ZinnJustin
SIGMA 5 (2009), 005, 10 pages [ abs
pdf ps ]

ThreeHilbertSpace Formulation of Quantum Mechanics

Miloslav Znojil
SIGMA 5 (2009), 001, 19 pages [ abs
pdf ps ]

