Causality and the S matrix



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Fernández-Rañada, Antonio (1967) Causality and the S matrix. Journal of Mathematical Physics, 8 (12). pp. 2321-2326. ISSN 0022-2488

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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.

Item Type:Article
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© 1968 The American Institute of Physics.

Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:25412
Deposited On:14 May 2014 08:31
Last Modified:10 Dec 2018 14:58

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