RT Journal Article
T1 Causality and the S matrix
A1 Fernández-Rañada, Antonio
AB A formalism is presented in order to impose causality conditions for finite‐range interactions which do not require the existence of wave packets with a sharp front. The absence of bound states and particle production is assumed. Two different causality conditions—referred to as strong and weak conditions—are studied. It is shown that in general the convolution kernel that connects the ingoing with the outgoing wave is not zero in the past. Some analytic properties of the S matrix are deduced.
PB American Institute of Physics
SN 0022-2488
YR 1967
FD 1967-12
LK https://hdl.handle.net/20.500.14352/64925
UL https://hdl.handle.net/20.500.14352/64925
NO © 1968 The American Institute of Physics.
DS Docta Complutense
RD 28 abr 2025