2024-03-28T23:05:44Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/335952021-06-24T07:21:28Zcom_10324_22154com_10324_954com_10324_894col_10324_22155
00925njm 22002777a 4500
dc
Losada, Marcelo
author
Fortin, Sebastian
author
Gadella Urquiza, Manuel
author
Holik, Federico
author
2018
We introduce a dynamical evolution operator for dealing with unstable physical process, such as scattering resonances, photon emission, decoherence and particle decay. With that aim, we use the formalism of rigged Hilbert space and represent the time evolution of quantum observables in the Heisenberg picture, in such a way that time evolution is nonunitary. This allows to describe observables that are initially noncommutative, but become commutative after time evolution. In other words, a non-abelian algebra of relevant observables becomes abelian when times goes to infinity. We finally present some relevant examples.
International Journal of Modern Physics A, 2018, Vol. 33, No. 18
http://uvadoc.uva.es/handle/10324/33595
https://doi.org/10.1142/S0217751X18501099
Dynamics of algebras in quantum unstable systems