- #1
IxRxPhysicist
- 34
- 0
Hey all,
I starting to study QED along with a slew with other materials. (I read in the QED book and when I don't understand a reference I go to Jackson's E&M and work some problems out, it has been beneficial thus far!) Most of the topics are not too far fetched but I am struggling to understand the notation of contra-variant and covariant vectors. I have found a really good pdf (http://www.physics.ohio-state.edu/~mathur/grnotes1.pdf) that has helped out very much but I would still like to know the merits and purposes of using contra-variant and covariant vectors. I haven't started space-time yet!
Thanks,
IR
I starting to study QED along with a slew with other materials. (I read in the QED book and when I don't understand a reference I go to Jackson's E&M and work some problems out, it has been beneficial thus far!) Most of the topics are not too far fetched but I am struggling to understand the notation of contra-variant and covariant vectors. I have found a really good pdf (http://www.physics.ohio-state.edu/~mathur/grnotes1.pdf) that has helped out very much but I would still like to know the merits and purposes of using contra-variant and covariant vectors. I haven't started space-time yet!
Thanks,
IR