TY - JOUR
T1 - Bulk viscosity effects in event-by-event relativistic hydrodynamics
AU - Noronha-Hostler, Jacquelyn
AU - Denicol, Gabriel S.
AU - Noronha, Jorge
AU - Andrade, Rone P.G.
AU - Grassi, Frédérique
PY - 2013/10/25
Y1 - 2013/10/25
N2 - 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).
AB - 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).
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U2 - 10.1103/PhysRevC.88.044916
DO - 10.1103/PhysRevC.88.044916
M3 - Article
AN - SCOPUS:84886664341
SN - 0556-2813
VL - 88
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 4
M1 - 044916
ER -