Transport coefficients from the 2PI effective action

Details Transport coefficients from the 2PI effective action Transport coefficients from the 2PI effective action

2003-03-25

arxiv.org/abs/hep-ph/0303216v3

Phys.Rev. D68 (2003) 085009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, explanation in introduction expanded, summary added; to appear in PRD

Scientific paper

10.1103/PhysRevD.68.085009

We show that the lowest nontrivial truncation of the two-particle irreducible (2PI) effective action correctly determines transport coefficients in a weak coupling or 1/N expansion at leading (logarithmic) order in several relativistic field theories. In particular, we consider a single real scalar field with cubic and quartic interactions in the loop expansion, the O(N) model in the 2PI-1/N expansion, and QED with a single and many fermion fields. Therefore, these truncations will provide a correct description, to leading (logarithmic) order, of the long time behavior of these systems, i.e. the approach to equilibrium. This supports the promising results obtained for the dynamics of quantum fields out of equilibrium using 2PI effective action techniques.

Affiliated with

Also associated with

No associations

Rating

Transport coefficients from the 2PI effective action 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 Transport coefficients from the 2PI effective action, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport coefficients from the 2PI effective action will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-332753