rar0308 Messages 55 Reaction score 0 Thread starter Jun 12, 2013 #1 I found this in Srednicki's QFTbook. I don't know what ↔ means. Help me, please Attachments 2013-06-13 01 32 30.png 3 KB · Views: 555
Timo Messages 405 Reaction score 50 Jun 12, 2013 #2 Presumably "the same term as before, but with the two indices exchanged". It should be deductible from the context, though.
Presumably "the same term as before, but with the two indices exchanged". It should be deductible from the context, though.
rar0308 Messages 55 Reaction score 0 Jun 12, 2013 #3 Like this? Attachments 2013-06-13 01444.png 2.9 KB · Views: 585
Bill_K Science Advisor Insights Author Messages 4,159 Reaction score 207 Jun 12, 2013 #4 Yes, like that. (Except you forgot the i.) This is Eq (34.4) in Srednicki.