Transition probability clarification
Posted: Tue Apr 04, 2023 4:52 pm
Dear EPW Community,
In transport.f90, the transition probability is defined as
The first term is absorption (+w_q) and the second term is emission (-w_q).
However, in Eq. 3 in PRB76, 165108, 2007, the first term in the delta function is emission and the second term is absorption.
Is there a convention difference between the EPW code and the PRB76 paper?
Thanks,
Vahid
Vahid Askarpour
Department of physics and atmospheric science
Dalhousie University
Halifax, Canada
In transport.f90, the transition probability is defined as
Code: Select all
! transition probability
! (2 pi/hbar) * (k+q-point weight) * g2 *
! { [f(E_k+q) + n(w_q)] * delta[E_k - E_k+q + w_q] +
! [1 - f(E_k+q) + n(w_q)] * delta[E_k - E_k+q - w_q] }
However, in Eq. 3 in PRB76, 165108, 2007, the first term in the delta function is emission and the second term is absorption.
Is there a convention difference between the EPW code and the PRB76 paper?
Thanks,
Vahid
Vahid Askarpour
Department of physics and atmospheric science
Dalhousie University
Halifax, Canada