Polchinski 2.4.1 change of coordinates

1. Feb 20, 2013

electroweak

I've been working through Polchinski on my own, and I have a really basic question. How would one derive equation 2.4.1? What does it even mean to write the stress tensor with the new indices z and z-bar? I thought this was obvious, but it isn't working out for me.

2. Feb 20, 2013

electroweak

clarification: this is not a homework problem, and it is not for a class.

3. Feb 20, 2013

electroweak

got it. wow, forgot to lower indices. there is nothing deep here, as i had originally suspected.

4. Feb 21, 2013

Naty1

Just did something analogous last week....dontcha just wish you would have waited??