Abstract:
The decay amplitude of an unstable particle in a relativistic geometrized model is
calculated. The states of the unstable system at an arbitrary instant of time are
constructed as coherent states on the discrete series of unitary irreducible
representations of the group $Sp(2,2)$ and are parametrized by a point of the
hyperboloid $\xi^2=-\rho^2$. The radius of curvature $\rho$ is related to the coupling constant and the energy. The transition to the limit of stable objects is investigated.