Assertion: s matrix | /r/HasProperty | the evolution operator
Facets:
value: between t = − ∞
type: OTHER
Source sentences:
text: In this special case, the Hilbert space is a space of irreducible unitary representations of the inhomogeneous Lorentz group (the Poincaré group); the S-matrix is the evolution operator between t = − ∞ {\displaystyle t=-\infty } (the distant past), and t = + ∞ {\displaystyle t=+\infty } (the distant future).