Yambo Community Forum

Hello,

I'm wondering if it is possible to calculate the transition dipole moment between two different exciton states, i.e. <S1|r|S2>, where r is the position operator, |S> is the exciton state?

Best,
Xiaoming

Dear Xiamonig,
this is not implemented in Yambo, anyway it is probably possibile to extract it by coding it externally. Note anyway that |S> is a two particle state, i.e. it depends on r_e and r_h so you need to think on want you really need.

Best,
Daniele