52 citations · 208 across the 8 of their papers we have counts for
8 papers
Flavour mixing transport theory and resonant leptogenesis
Henri Jukkala, Kimmo Kainulainen, Pyry M. Rahkila
We derive non-equilibrium quantum transport equations for flavour-mixing fermions. We develop the formalism mostly in the context of resonant leptogenesis with two mixing Majorana…
Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation
Matti Herranen, Kimmo Kainulainen, Pyry Matti Rahkila
We present a simplified and generalized derivation of the flavour-coherent propagators and Feynman rules for the fermionic kinetic theory based on coherent quasiparticle approximat…
Flavoured quantum Boltzmann equations from cQPA
Christian Fidler, Matti Herranen, Kimmo Kainulainen +1
We develop a Boltzmann-type quantum transport theory for interacting fermion and scalar fields including both flavour and particle-antiparticle mixing. Our formalism is based on th…
Coherent quasiparticle approximation cQPA and nonlocal coherence
Matti Herranen, Kimmo Kainulainen, Pyry M. Rahkila
We show that the dynamical Wigner functions for noninteracting fermions and bosons can have complex singularity structures with a number of new solutions accompanying the usual mas…
Kinetic theory for scalar fields with nonlocal quantum coherence
Matti Herranen, Kimmo Kainulainen, Pyry Matti Rahkila
We derive quantum kinetic equations for scalar fields undergoing coherent evolution either in time (coherent particle production) or in space (quantum reflection). Our central find…
Kinetic transport theory with quantum coherence
Matti Herranen, Kimmo Kainulainen, Pyry M. Rahkila
We derive transport equations for fermions and bosons in spatially or temporally varying backgrounds with special symmetries, by use of the Schwinger-Keldysh formalism. In a nonint…
Quantum kinetic theory for fermions in temporally varying backrounds
Matti Herranen, Kimmo Kainulainen, Pyry Matti Rahkila
We derive quantum kinetic equations for fermions in a homogeneous time-dependent background in presence of decohering collisions, by use of the Schwinger-Keldysh CTP-formalism. The…
Towards a kinetic theory for fermions with quantum coherence
Matti Herranen, Kimmo Kainulainen, Pyry Matti Rahkila
A new density matrix and corresponding quantum kinetic equations are introduced for fermions undergoing coherent evolution either in time (coherent particle production) or in space…