The European Physical Journal C

, Volume 49, Issue 1, pp 187–191 | Cite as

The role of the gluonic \(gg\leftrightarrow{ggg}\) interactions in early thermalization in ultrarelativistic heavy-ion collisions

  • Zhe Xu
  • C. Greiner
Regular Article - Theoretical Physics


We “quantify” the role of elastic as well as inelastic \(gg\leftrightarrow{ggg}\) pQCD processes in kinetic equilibration within a pQCD inspired parton cascade. The contributions of different processes to kinetic equilibration are manifested by the transport collision rates. We find that in a central Au+Au collision at RHIC energy pQCD bremsstrahlung processes are much more efficient for momentum isotropization compared to elastic scatterings. For the parameters chosen the ratio of their transport collision rates amounts to 5:1.


Elastic Scattering Quark Matter Inelastic Collision Kinetic Equilibration Transport Cross Section 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M. Gyulassy, L. McLerran, Nucl. Phys. A 750, 30 (2005)CrossRefADSGoogle Scholar
  2. 2.
    Z. Xu, C. Greiner, Phys. Rev. C 71, 064901 (2005)CrossRefADSGoogle Scholar
  3. 3.
    Z. Xu, C. Greiner, Proceedings of Quark Matter 2006, hep-ph/0509324Google Scholar
  4. 4.
    J. Serreau, D. Schiff, J. High Energ. Phys. 0111, 039 (2001)CrossRefADSGoogle Scholar
  5. 5.
    P. Danielewicz, M. Gyulassy, Phys. Rev. D 31, 53 (1985)CrossRefADSGoogle Scholar
  6. 6.
    D. Molnar, Nucl. Phys. A 661, 205 (1999)CrossRefADSGoogle Scholar
  7. 7.
    J.F. Gunion, G. Bertsch, Phys. Rev. D 25, 746 (1982)CrossRefADSGoogle Scholar
  8. 8.
    T.S. Biro et al., Phys. Rev. C 48, 1275 (1993)CrossRefADSGoogle Scholar
  9. 9.
    S.M.H. Wong, Nucl. Phys. A 607, 442 (1996)CrossRefADSGoogle Scholar
  10. 10.
    J.D. Bjorken, Phys. Rev. D 27, 140 (1983)CrossRefADSGoogle Scholar
  11. 11.
    G. Baym, Phys. Lett. B 138, 18 (1984)CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  1. 1.Institut für Theoretische PhysikJohann Wolfgang Goethe-UniversitätFrankfurtGermany

Personalised recommendations