Meaning of \gamma{\mu}, \gamma{\nu} in Rows 1,2,3

[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

 

[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 :)

 

[sunkesheng]

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

 

[ansgar]

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

cool, the image you posted is from Peskin right?

 

[sunkesheng]

cool, the image you posted is from Peskin right?

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