Nonlinearity in Quantum Theory and Closed Timelike Curves

Details Nonlinearity in Quantum Theory and Closed Timelike Curves Nonlinearity in Quantum Theory and Closed Timelike Curves

1994-09-02

arxiv.org/abs/gr-qc/9409003v2

Phys.Rev. D52 (1995) 5676-5680

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages plain TeX, DAMTP R/94/34

Scientific paper

10.1103/PhysRevD.52.5676

We examine consequences of the density matrix approach to quantum theory in
the context of a model spacetime containing closed timelike curves and find
that in general, an initially pure state will evolve in a nonlinear way to a
mixed quantum state. CPT invariance and the implications of this nonlinearity
for the statistical interpretation of quantum theory are discussed.

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