Heavy ion collisions and anisotropic hydrodynamics

I. Lovas, G. Wolf, N. L. Balazs

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The study of the isotropization of momentum is important in heavy ion collisions. To do this we construct a generalized hydrodynamical equation system, in which the anisotropy of the momentum distribution is added as a new variable. These equations are derived from the moment equations of the relativistic Boltzmann equation where the closure of the set is achieved by assuming a particular class of initial conditions. The equations are then explicitly solved for two uniform interpenetrating hadron streams. The collision cross sections are the bare hadron cross sections; the presence of the other hadrons can be simulated by the use of a density- and energy-density-dependent temperature and mass, taken over from self-consistent calculations. The results are compared with other theoretical results. We find that the isotropization occurs sufficiently rapidly for medium energy head-on collisions to reach local thermal equilibrium.

Original languageEnglish
Pages (from-to)141-148
Number of pages8
JournalPhysical Review C - Nuclear Physics
Volume35
Issue number1
DOIs
Publication statusPublished - 1987

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ionic collisions
hydrodynamics
momentum
collisions
cross sections
hadrons
closures
flux density
moments
anisotropy
temperature
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Heavy ion collisions and anisotropic hydrodynamics. / Lovas, I.; Wolf, G.; Balazs, N. L.

In: Physical Review C - Nuclear Physics, Vol. 35, No. 1, 1987, p. 141-148.

Research output: Contribution to journalArticle

Lovas, I. ; Wolf, G. ; Balazs, N. L. / Heavy ion collisions and anisotropic hydrodynamics. In: Physical Review C - Nuclear Physics. 1987 ; Vol. 35, No. 1. pp. 141-148.
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