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Clustering of Color sources and the Equation of State in Heavy Ion Collisions at RHIC and LHC Energies

Scharenberg, R P

Journal of physics. Conference series, 2012-01, Vol.389 (1), p.12037-8 [Periódico revisado por pares]

Bristol: IOP Publishing

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  • Título:
    Clustering of Color sources and the Equation of State in Heavy Ion Collisions at RHIC and LHC Energies
  • Autor: Scharenberg, R P
  • Assuntos: Acoustic velocity ; Atomic collisions ; Clustering ; Color ; Energy density ; Equations of state ; Flux density ; Heavy ions ; Ionic collisions ; Joining ; Kinetic theory ; Large Hadron Collider ; Percolation ; Projectiles ; Relativistic Heavy Ion Collider ; Relativistic theory ; Sound velocity ; Strings ; Titanium
  • É parte de: Journal of physics. Conference series, 2012-01, Vol.389 (1), p.12037-8
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The initial temperature Ti, energy density ϵi, and formation time τi of the initial state of the QGP formed in the heavy ion collisions at RHIC and LHC energies are determined using the data driven Color String Percolation Model (CSPM). Multiparticle production by interacting strings stretched between projectile and target form a spanning cluster at the percolation threshold. The relativistic kinetic theory relation for η/s is evaluated as a function of T and the mean free path (λmfp) using data and CSPM. η/s(Ti, λmfp) describes the transition from a strongly interacting QGP at T/Tc ~ 1 to a weakly coupled QGP at T/Tc ≥ 6. We find that the reciprocal of η/s is equal to the trace anomaly Δ ϵ − 3P/T4 which also describes the transition. We couple this initial state of the QGP to a ID Bjorken expansion to determine the sound velocity c2s of the QGP for 0.85 ≤ T/Tc ≤ 3. The bulk thermodynamic quantities and the equation of state are in excellent agreement with LQCD results.
  • Editor: Bristol: IOP Publishing
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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