Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation

Details Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation

2011-08-11

arxiv.org/abs/1108.2371v2

JHEP 1202 (2012) 080

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 3 figures. Minor modifications, version published in JHEP

Scientific paper

We present a simplified and generalized derivation of the flavour-coherent propagators and Feynman rules for the fermionic kinetic theory based on coherent quasiparticle approximation (cQPA). The new formulation immediately reveals the composite nature of the cQPA Wightman function as a product of two spectral functions and an effective two-point interaction vertex, which contains all quantum statistical and coherence information. We extend our previous work to the case of nonzero dispersive self-energy, which leads to a broader range of applications. By this scheme, we derive flavoured kinetic equations for local 2-point functions $S^{<,>}_\mathbf{k}(t,t)$, which are reminiscent of the equations of motion for the density matrix. We emphasize that in our approach all the interaction terms are derived from first principles of nonequilibrium quantum field theory.

Affiliated with

Also associated with

No associations

Rating

Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-275884