Advertisement

Thermalization of gluons at RHIC: Dependence on initial conditions

  • Z. Xu
  • C. Greiner
Quark-Gluon-Plasma Thermalization

Abstract.

We investigate how thermalization of gluons depends on the initial conditions assumed in ultrarelativistic heavy-ion collisions at RHIC. The study is based on simulations employing the pQCD inspired parton cascade solving the Boltzmann equation for gluons. We consider independently produced minijets with p T > p 0 = 1.3-2.0GeV and a color glass condensate as possible initial conditions for the freed gluons. It turns out that full kinetic equilibrium is achieved slightly sooner in denser systems and its timescale tends to saturate. Compared with the kinetic equilibration we find a stronger dependence of chemical equilibration on the initial conditions.

PACS.

05.60.-k Transport processes 24.10.Lx Monte Carlo simulations (including hadron and parton cascades and string breaking models) 25.75.-q Relativistic heavy-ion collisions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Z. Xu, C. Greiner, Phys. Rev. C 71, 064901 (2005). CrossRefADSGoogle Scholar
  2. 2.
    STAR Collaboration (J. Adams), Phys. Rev. C 70, 054907 (2004).CrossRefADSGoogle Scholar
  3. 3.
    L.D. McLerran, R. Venugopalan, Phys. Rev. D 49, 2233Google Scholar
  4. 4.
    E.J. Eskola, K. Kajantie, P.V. Ruuskanen, K. Tuominen, Nucl. Phys. B 570, 379 (2000)CrossRefADSGoogle Scholar
  5. 5.
    J. Serreau, D. Schiff, JHEP 0111, 039 (2001).CrossRefADSGoogle Scholar
  6. 6.
    M. Glück, E. Reya, A. Vogt, Z. Phys. C 67, 433 (1995).CrossRefGoogle Scholar
  7. 7.
    A.H. Mueller, Nucl. Phys. B 572, 227 (2000).CrossRefADSGoogle Scholar
  8. 8.
    J. Bjoraker, R. Venugopalan, Phys. Rev. C 63, 024609 (2001).CrossRefADSGoogle Scholar
  9. 9.
    T.S. Biró, Phys. Rev. C 48, 1275 (1993).CrossRefADSGoogle Scholar
  10. 10.
    R. Baier, A.H. Mueller, D. Schiff, D.T. Son, Phys. Lett. B 502, 51 (2001).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • Z. Xu
    • 1
  • C. Greiner
    • 1
  1. 1.Institut für Theoretische PhysikJohann Wolfgang Goethe Universität FrankfurtFrankfurtGermany

Personalised recommendations