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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeAug 7th 2017
   • (edited Aug 7th 2017)
   • PermaLink
   Author: Urs
   Format: MarkdownItexI have given _[[interaction picture]]_ genuine content (the entry used to be effectively empty): gave it one section "In quantum mechanics" with the standard kind of material going from interacting Hamiltonians to the definition of the [[S-matrix]], and then a section "In quantum field theory" with an outline of which steps in the previous discussion require special technical care and how. In the process I expanded the entry _[[Dyson formula]]_. (In the end I effectively rewrote it, but now with a little broader perspective and more pointers).

   I have given interaction picture genuine content (the entry used to be effectively empty):

   gave it one section “In quantum mechanics” with the standard kind of material going from interacting Hamiltonians to the definition of the S-matrix, and then a section “In quantum field theory” with an outline of which steps in the previous discussion require special technical care and how.

   In the process I expanded the entry Dyson formula. (In the end I effectively rewrote it, but now with a little broader perspective and more pointers).