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Phoenix87
Phoenix87
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In chapter 20, of Peskin and Schroeder's quantum field theory book, they start with a comment that a global symmetry that is manifest lead to \emph{particle multiplets}particle multiplets with \emph{restricted interactions}restricted interactions. Can someone please explain how does a global symmetry does so with an example. I cannot understand this point.

In chapter 20, of Peskin and Schroeder's quantum field theory book, they start with a comment that a global symmetry that is manifest lead to \emph{particle multiplets} with \emph{restricted interactions}. Can someone please explain how does a global symmetry does so with an example. I cannot understand this point.

In chapter 20, of Peskin and Schroeder's quantum field theory book, they start with a comment that a global symmetry that is manifest lead to particle multiplets with restricted interactions. Can someone please explain how does a global symmetry does so with an example. I cannot understand this point.

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SRS
SRS
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Global symmetry and particle multiplets

In chapter 20, of Peskin and Schroeder's quantum field theory book, they start with a comment that a global symmetry that is manifest lead to \emph{particle multiplets} with \emph{restricted interactions}. Can someone please explain how does a global symmetry does so with an example. I cannot understand this point.