Thermal, chemical and spectral equilibration in heavy-ion collisions

Gábor András Almási, G. Wolf

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have considered the equilibration in relativistic heavy ion collisions at energies 1-7 A GeV using our transport model. We applied periodic boundary conditions to close the system in a box. We found that the thermal equilibration takes place in the first 20-40 fm/. c whose time is comparable to the duration of a heavy ion collision. The chemical equilibration is a much slower process and the system does not equilibrate in a heavy ion collision. We have shown that in the testparticle simulation of the Boltzmann equation the mass spectra of broad resonances follow instantaneously their in-medium spectral functions as expected from the Markovian approximation to the Kadanoff-Baym equations employed via the (local) gradient expansion.

Original languageEnglish
Pages (from-to)117-136
Number of pages20
JournalNuclear Physics A
Volume943
DOIs
Publication statusPublished - Nov 1 2015

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ionic collisions
mass spectra
boxes
boundary conditions
gradients
expansion
approximation
simulation
energy

Keywords

  • Dense matter
  • Equilibration in heavy ion collision
  • Vector mesons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Thermal, chemical and spectral equilibration in heavy-ion collisions. / Almási, Gábor András; Wolf, G.

In: Nuclear Physics A, Vol. 943, 01.11.2015, p. 117-136.

Research output: Contribution to journalArticle

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