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quant-ph2003
Can differently prepared mixed states be distinguished?
Jiri Tolar, Petr Hajicek
A measurement has been proposed by B. d'Espagnat that would distinguish from one another some ensembles that are differently prepared but correspond to the same density matrix. Her…
gr-qc2003
Gauge-invariant Hamiltonian dynamics of cylindrical gravitational waves
Ioannis Kouletsis, Petr Hajicek, Jiri Bicak
The model of cylindrical gravitational waves is employed to work out and check a recent proposal in Ref. [11] how a diffeomorphism-invariant Hamiltonian dynamics is to be construct…
gr-qc2003
Canonical theory of spherically symmetric spacetimes with cross-streaming null dusts
Jiri Bicak, Petr Hajicek
The Hamiltonian dynamics of two-component spherically symmetric null dust is studied with regard to the quantum theory of gravitational collapse. The components--the ingoing and ou…