Declare a Commutation Relationship in FeynCalc

AI Thread Summary
The discussion revolves around a user's difficulty in declaring a commutation relationship between tensors with different indices in FeynCalc, a Mathematica extension for quantum field theory. The user is working on a problem from Peskin & Schroeder and is unsure how to express the necessary relationship within the software. Despite searching through documentation and examples, no practical solutions were found. A tutor suggested that such operations are not the primary focus of FeynCalc, recommending the user explore other tools instead. The conversation highlights the limitations of FeynCalc for specific tensor operations in quantum field theory.
ShadowMeson
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Homework Statement


I am a rookie to the QFT extension in Mathematica called FeynCalc, and tried to use that into solving some quiz. Soon I met a problem upon some condition presented in a problem which declares an relation of two same tensor with different indices results in some value when commuted. I don't know how to express such relationship nor how intelligent the program is in dealing with that.

Homework Equations


Thai problem is Peskin&Schroeder 3.1.

The Attempt at a Solution


Searched the document and examples, no practical suggestions found yet.
 
Got the response from my kind of tutor that such operation ain't the focus of FeynCalc and I shall focus on other tools.
 

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