What this means ?

1. Apr 4, 2010

sunkesheng

i can see the mean of "[]" in the first row,it is the anticommunicater between \gamma{\mu} and \gamma{\nu}, but what it mean in the second row and the third?

thanks

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2. Apr 4, 2010

ansgar

that means that the indicies should be antisymmetrized,

from the first you see it is a DEFINITION of the anticommutator, so you should be able to figure out what the third and second line is :)

3. Apr 24, 2010

sunkesheng

thanks ，i found it in weinberge`s book vol.1

4. Apr 24, 2010

ansgar

cool, the image you posted is from Peskin right?

5. Apr 24, 2010

sunkesheng

that is right,and peskin had learnt from weinberge,hh

Last edited: Apr 25, 2010