What does c.c. in equation represent?

[semc]

Hi, I am reading up on current injection in semiconductor and in the derivation of the current injection, the equation goes like this

|K|²= ... +E^b(-w) + c.c.

Does anyone knows what does c.c. represent?

 

[vela]

Just a guess, but I'd go with complex conjugate.

 

[guest1234]

This one doesn't look like a complex conjugate, since it's an operation not an additive quantity.
To OP: You just have to give more context, but the chances are that it's explained in the original text.

 

[vela]

This one doesn't look like a complex conjugate, since it's an operation not an additive quantity.

I'm not sure how you determined that. After all, there's a plus sign right before "c.c."

 

[semc]

This one doesn't look like a complex conjugate, since it's an operation not an additive quantity.
To OP: You just have to give more context, but the chances are that it's explained in the original text.

The author is trying to derive the current injection into semiconductor via quantum interference. In his working before this, he is trying to expand a complex equation and the next step is the final result. He did not mention what the c.c. means so I am thinking it might be complex conjugate but I am not sure.

My bad that I did not mention its a complex function :(

 

[clamtrox]

It means complex conjugate of everything that's written down before it. So for example $$\psi_1^* \psi_2 + \psi_2^* \psi_3 + c.c. = \psi_1^* \psi_2 + \psi_1 \psi_2^* + \psi_2^* \psi_3 + \psi_2 \psi_3^*$$
Sometimes you also see "h.c.", which stands for hermitian conjugate.