Non-exponential decay in Quantum Mechanics and Quantum Field Theory
Quantum Physics
2015-06-18 v1 High Energy Physics - Phenomenology
Abstract
We describe some salient features as well as some recent developments concerning short-time deviations from the exponential decay law in the context of Quantum Mechanics by using the Lee Hamiltonian approach and Quantum Field Theory by using relativistic Lagrangians. In particular, the case in which two decay channels are present is analyzed: the ratio of decay probability densities, which is a constant equal to the ratio of decay widths in the exponential limit, shows in general sizable fluctuations which persist also at long times.
Keywords
Cite
@article{arxiv.1312.3315,
title = {Non-exponential decay in Quantum Mechanics and Quantum Field Theory},
author = {Francesco Giacosa},
journal= {arXiv preprint arXiv:1312.3315},
year = {2015}
}
Comments
Proceeding contribution for the symposium "Symmetries in Science", 21-26/7/2013, Bregenz (Austria). 6 pages, 2 figures