Bulk viscosity effects in event-by-event relativistic hydrodynamics

Jacquelyn Noronha-Hostler, Gabriel S. Denicol, Jorge Noronha, Rone P.G. Andrade, Frédérique Grassi

Research output: Contribution to journalArticlepeer-review


Bulk viscosity effects on the collective flow harmonics in heavy-ion collisions are investigated, on an event-by-event basis, using a newly developed 2+1 Lagrangian hydrodynamic code named v-usphydro, which implements the smoothed particle hydrodynamics algorithm for viscous hydrodynamics. A new formula for the bulk viscous corrections present in the distribution function at freeze-out is derived, starting from the Boltzmann equation for multi-hadron species. Bulk viscosity is shown to enhance the collective flow Fourier coefficients from v2(pT) to v5(pT) when pT∼1-2.5 GeV, even when the bulk viscosity to entropy density ratio, ζ/s, is significantly smaller than 1/(4π).

Original languageEnglish (US)
Article number044916
JournalPhysical Review C - Nuclear Physics
Issue number4
StatePublished - Oct 25 2013
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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