Next-to-Leading Order Shear Viscosity in lambda phi^4 Theory

Details Next-to-Leading Order Shear Viscosity in lambda phi^4 Theory Next-to-Leading Order Shear Viscosity in lambda phi^4 Theory

2007-06-25

arxiv.org/abs/0706.3692v2

Phys.Rev.D76:107702,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure. Typos fixed, tiny change in discussion

Scientific paper

10.1103/PhysRevD.76.107702

We show that the shear viscosity of lambda phi^4 theory is sensitive at next-to-leading order to soft physics, which gives rise to subleading corrections suppressed by only a half power of the coupling, eta = [3033.54 + 1548.3 m_{th}/T] N T^3]/[ (N+2)/3 lambda^2], with m^2_th=(N+2)/72 lambda T^2. The series appears to converge about as well (or badly) as the series for the pressure.

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