出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We investigate a formulation of Poincaré invariant quantummechanics where the dynamical input is Euclidean invariant Green functions or their generating functional. We argue that within this framework it is possible to calculate scattering observables, binding energies, and perform finite Poincaré transformations without using any analytic continuation. We demonstrate, using a toy model, how matrix elements of e−b H in normalizable states can be used to compute transition matrix elements for energies up to 2 GeV. We discuss some open problems.
