Poincare Semigroup Symmetry as an Emergent Property of Unstable Systems
arXiv:hep-ph/0511298 · doi:10.1007/s10773-006-9329-3
Abstract
The notion that elementary systems correspond to irreducible representations of the Poincare group is the starting point for this paper, which then goes on to discuss how a semigroup for the time evolution of unstable states and resonances could emerge from the underlying Poincare symmetry. Important tools in this analysis are the Clebsch-Gordan coefficients for the Poincare group.
17 pages, 1 figure
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