Time-Reversal and Irreversibility

Details Time-Reversal and Irreversibility Time-Reversal and Irreversibility

1995-12-12

arxiv.org/abs/quant-ph/9512014v1

Acta Phys.Polon.B27:2295-2318,1996

Physics

Quantum Physics

27 pages. The paper consists of the LaTeX file and two PostScript files that contain one figure and one specially formatted fo

Scientific paper

The time reversal and irreversibility in conventional quantum mechanics are compared with those of the rigged Hilbert space quantum mechanics. We discuss the time evolution of Gamow and Gamow-Jordan vectors and show that the rigged Hilbert space case admits a new kind of irreversibility which does not appear in the conventional case. The origin of this irreversibility can be traced back to different initial-boundary conditions for the states and observables. It is shown that this irreversibility does not contradict the experimentally tested consequences of the time-reversal invariance of the conventional case but instead we have to introduce a new time reversal operator.

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