Quasiparticle anisotropic hydrodynamics

2016/10/24 by Mubarak Alqahtani, Michael Strickland · 1 citation
Physics and Astronomy · #nucl-th #hep-ph

paper · pdf · doi:10.1088/1742-6596/832/1/012051

4 pages, 1 figure; proceedings contribution for Hot Quarks 2016

arxiv created 2016/10/24 · arxiv updated 2017/05/24

Abstract

We study an azimuthally-symmetric boost-invariant quark-gluon plasma using quasiparticle anisotropic hydrodynamics including the effects of both shear and bulk viscosities. We compare results obtained using the quasiparticle method with the standard anisotropic hydrodynamics and viscous hydrodynamics. We consider the predictions of the three methods for the differential particle spectra and mean transverse momentum. We find that the three methods agree for small shear viscosity to entropy density ratio, η/s, but show differences at large η/s. Additionally, we find that the standard anisotropic hydrodynamics method shows suppressed production at low transverse-momentum compared to the other two methods, and the bulk-viscous correction can drive the primordial particle spectra negative at large p_T in viscous hydrodynamics.

Cited by

• Exact solutions for the moments of the binary collision integral and its relation to the relaxation-time approximation in leading-order anisotropic fluid dynamics