| F. Kleefeld:
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On some meaningful inner product for real Klein-Gordon fields with positive semi-definite norm
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| quant-ph/0606070
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| Internal preprint number: FK-2006-3
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| ()
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| E. van Beveren, D.V. Bugg, F. Kleefeld, G. Rupp:
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The Nature of sigma, kappa, a0(980) and f0(980)
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| hep-ph/0606022
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| Internal preprint number: FK-2006-2
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| ()
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| M.D. Scadron, F. Kleefeld, G. Rupp:
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Pion chiral symmetry breaking in the quark-level linear sigma model and chiral perturbation theory
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| hep-ph/0601196
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| Internal preprint number: FK-2006-1
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| Eef van Beveren, João E.G.N. Costa, Frieder Kleefeld, George Rupp:
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From the Kappa via the D*S0(2317) to the ChiC0: connecting light and heavy scalar mesons
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| (See also: http://cft.fis.uc.pt/eef/animations/start.html )
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| hep-ph/0509351
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| Internal preprint number: FK-2005-4
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| ()
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| F. Kleefeld:
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Non-Hermitian Quantum Theory and its Holomorphic Representation: Introduction and Applications
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| hep-th/0408097
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| Internal preprint number: FK-2004-3
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| (Invited oral contribution to the
2nd Int. Workshop on "Pseudo-Hermitian Hamiltonians in Quantum Physics II", 14.-16.6.2004, Villa Lanna, Prague, Czech Republic)
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| F. Kleefeld:
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Non-Hermitian Quantum Theory and its Holomorphic Representation: Introduction and Some Applications
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| hep-th/0408028
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| Internal preprint number: FK-2004-1
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| ()
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| F. Kleefeld:
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Is a quantum theory of resonances really time asymmetric?
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| hep-th/0312027
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| Proceedings of
CFIF 2003 workshop on
"Time Asymmetric Quantum Theory: the Theory of Resonances", 23.-26.7.2003, CFIF, IST, Lisbon, Portugal
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| Internal preprint number: FK-2003-5
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| ()
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| F. Kleefeld:
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Model-independent definition and determination of electromagnetic formfactors and multipole moments
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| nucl-th/0012076
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| Internal preprint number: FK-2000-3
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| F. Kleefeld:
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Approximate field-theoretic method of describing scattering and
production processes of composite particles by asymptotic in- and outgoing
Bethe-Salpeter states
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| (Internal report, 18 pages)
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| Internal preprint number: FAU-TP3-99 / 2
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| F. Kleefeld, M. Dillig:
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Protoninduced $\pi^0$-, $\eta$- and $K^+$-Production at Threshold
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| Internal preprint number: FAU-TP3-98 / 17
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| (Preprint and poster-contribution to the
Eighth International Conference on the Structure of Baryons (Baryons '98),
University of Bonn, Germany, September 22-26, 1998
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| F. Kleefeld, M. Dillig:
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Trace evaluation of matrix determinants and
inversion of 4 x 4 matrices in terms of Dirac covariants
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| hep-ph/9806415
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| Internal preprint number: FAU-TP3-97 / 4
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| F. Kleefeld, M. Dillig:
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Bethe-Salpeter-Approach to Relativistic Two-Fermion-Systems with a Separable
Nonstatic Interaction
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| nucl-th/9806058
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| Internal preprint number: FAU-TP3-96 / 2
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| ( Few-Body Systems 15 (1993) N24)
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