Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields

Details Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields

2008-09-19

arxiv.org/abs/0809.3390v1

Phys.Rev.D78:125028,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 eps figures

Scientific paper

10.1103/PhysRevD.78.125028

The 1/N expansion of the two-particle irreducible effective action offers a powerful approach to study quantum field dynamics far from equilibrium. We investigate the effective convergence of the 1/N expansion in the O(N) model by comparing results obtained numerically in 1+1 dimensions at leading, next-to-leading and next-to-next-to-leading order in 1/N as well as in the weak coupling limit. A comparison in classical statistical field theory, where exact numerical results are available, is made as well. We focus on early-time dynamics and quasi-particle properties far from equilibrium and observe rapid effective convergence already for moderate values of 1/N or the coupling.

Affiliated with

Also associated with

No associations

Rating

Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields 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 Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effective convergence of the 2PI-1/N expansion for nonequilibrium quantum fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-157818