ua nt - p h / 02 07 04 4 v 2 2 7 Se p 20 04 Shouldn ’ t there be an antithesis to quantization ? ∗ Eric

ar X iv : q ua nt - p h / 02 07 04 4 v 3 2 9 Ju l 2 00 8 Shouldn ’ t there be an antithesis to quantization ? ∗

We raise the possibility of developing a theory of constructing quantum dynamical observables independent from quantization and deriving classical dynamical observables from pure quantum mechanical consideration. We do so by giving a detailed quantum mechanical derivation of the classical time of arrival at arbitrary arrival points for a particle in one dimension.

ua nt - p h / 04 02 17 8 v 1 2 4 Fe b 20 04 On the structure of optimal sets for tensor product channel

ua nt - p h / 02 04 04 8 v 1 9 A pr 2 00 2 1 General realization of N = 4 supersymmetric quantum mechanics and its applications

Dong Ruan∗ Department of Physics, Tsinghua University, Beijing 100084, P. R. China, Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou, 730000, P. R. China The Key Laboratory of Quantum Information and Measurements of Ministry of Education, Tsinghua University, Beijing 100084, P. R. China, and Weicheng Huang Institute of Applied Chemistry, Xingjiang Uni...

ar X iv : q ua nt - p h / 04 09 18 4 v 1 2 7 Se p 20 04 Sets of Mutually Unbiased Bases as Arcs in Finite Projective Planes ?

This note is a short elaboration of the conjecture of Saniga et al (J. Opt. B: Quantum Semiclass. 6 (2004) L19-L20) by regarding a set of mutually unbiased bases (MUBs) in a d-dimensional Hilbert space, d being a power of a prime, as an analogue of an arc in a (Desarguesian) projective plane of order d. Complete sets of MUBs thus correspond to (d+1)-arcs, i.e., ovals. The existence of two princ...

ua nt - p h / 97 04 02 5 v 1 1 4 A pr 1 99 7 Lorentz - covariant stochastic wave function dynamics ?

The recently reported Lorentz-covariant Ito-Schrödinger equations are not translation-covariant. ∗On leave from Research Institue for Particle and Nuclear Physics, Budapest; E-mail: [email protected]