In this talk, we will present phenomenological predictions of 3+1d quasiparticle anisotropic hydrodynamics (aHydroQP). First, we will show comparisons with experimental data produced in 2.76 TeV Pb-Pb collisions at the LHC (PRL 119, 042301 and PRC 96, 044910). We will show some observables such as the spectra, multiplicity, elliptic flow, and HBT radii where we find the agreement between our model and experimental results is quite good. Additionally, we will present some comparisons between aHydroQP and experimental results in 200 GeV Au-Au collisions at RHIC. Our preliminary results show a quite good agreement with the experimental data for the spectra and multiplicity. From these two different systems, at two different energies, our results indicate that aHydroQP provides a promising framework for describing the dynamics of the momentum-space anisotropic QGP created in heavy-ion collisions.
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