Plasma Instabilities in an Anisotropically Expanding Geometry
May, 20064 pages
Published in:
- Phys.Rev.Lett. 97 (2006) 252301
e-Print:
- hep-ph/0605064 [hep-ph]
Report number:
- BI-TP-2006-11,
- TUW-06-04
Citations per year
Abstract: (arXiv)
We study (3+1)D kinetic (Boltzmann-Vlasov) equations for relativistic plasma particles in a one-dimensionally expanding geometry motivated by ultrarelativistic heavy-ion collisions. We set up local equations in terms of Yang-Mills potentials and auxiliary fields that allow simulations of hard-(expanding)-loop (HEL) dynamics on a lattice. We determine numerically the evolution of plasma instabilities in the linear (Abelian) regime and also derive their late-time behavior analytically, which is consistent with recent numerical results on the evolution of the so-called melting color-glass condensate. We also find a significant delay in the onset of growth of plasma instabilities which are triggered by small rapidity fluctuations, even when the initial state is highly anisotropic.Note:
- 4 pages, 1 figure, uses REVTEX4. v3: improved figure, version to appear in Phys. Rev. Lett
- 25.75.-q
- 52.27.Ny
- 11.10.Wx
- 12.38.Mh
- plasma instability
- plasma kinetic theory
- relativistic plasmas
- plasma collision processes
- plasma simulation
- plasma: relativistic
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