- #1
naima
Gold Member
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According to wikipedia AQFT needs test functions so that the fields are distributions smeared on these functions. I'd want to know what are these test functions.
I read in Haag's book that they are fast decreasing functions defined on space time. They belong to the set S of Schwartz functions. As they are defined on space time have they to decrease along t as they decrease along a space direction when itgoes to infinity?
Have you links with an answer to this question?
Thanks
I read in Haag's book that they are fast decreasing functions defined on space time. They belong to the set S of Schwartz functions. As they are defined on space time have they to decrease along t as they decrease along a space direction when itgoes to infinity?
Have you links with an answer to this question?
Thanks