Hello the_epi,
Thanks for your help. But I checked the website and check the Derivative part, I still do not understand how the Derivative related to the formula above. Could you please explain?
Thanks a lot.
Hello HallsofIvy,
Thank you very much for pointing out my mistake. I typed the wrong formula. I have corrected it. Would you please check it out again?
Thank you again.
Hi everyone,
Homework Statement
My problem is just to derive a simple formula, which is
http://www.texify.com/img/%5Cnormalsize%5C%21%28-1%29%5E%7Br%28r%2B1%29/2%7D%20%3D%5Csqrt%7B2%7D%20%5Cmbox%7Bcos%7D%20%5Cfrac%7B%5Cpi%7D%7B4%7D%282r%2B1%29.gif
Here r is a positive integer.
The Attempt...
Hello everyone,
I was learning about the topic "chiral symmetry breaking" recently and got couple questions. I try to describe my understandings below, then list the questions:
From the QCD Lagrangian level (quark level), I can understand the exact chiral symmetry exists when we take...