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VOLUME 76 | ISSUE 1 | PAGE 63
Timelapse
PACS: 03.64.-w, 13.90.-i
Abstract
We discuss the existence in an arbitrary frame of a finite time for the transformation of an initial quantum state into another e.g. in a decay. This leads to the introduction of a timelapse \tilde\tau in analogy with the lifetime of a particle. An argument based upon the Heisenberg uncertainty principle suggests the value of \tilde\tau =1/M_0. Consequences for the exponential decay formula and the modifications that \tilde\tau introduces into the Breit-Wigner mass formula are described.