Speaker
Prof.
Dirk Rischke
(University Frankfurt)
Description
We derive Boltzmann equations for massive spin-1/2 fermions with local and nonlocal collision terms from the Kadanoff--Baym equation in the Schwinger--Keldysh formalism, properly accounting for the spin degrees of freedom. The Boltzmann equations are expressed in terms of matrix-valued spin distribution functions, which are the building blocks for the quasi-classical parts of the Wigner functions. Nonlocal collision terms appear at next-to-leading order in ℏ and are sources for the polarization part of the matrix-valued spin distribution functions. The Boltzmann equations for the matrix-valued spin distribution functions pave the way for simulating spin-transport processes involving spin-vorticity couplings from first principles.
Author
Prof.
Qun Wang
(University of Science and Technology of China)
Co-authors
Dr
Xin-li Sheng
(Central China Normal University)
Ms
Nora Weickgenannt
(Goethe University Frankfurt)
Dr
Enrico Speranza
(University of Illinois at Urbana-Champaign)
Prof.
Dirk Rischke
(University Frankfurt)
