Collective Dynamics II
- Chiho Nonaka (Nagoya University (JP))
Michael Strickland (Kent State University)
9/29/15, 10:50 AM
We derive the equations of motion for a system undergoing boost-invariant longitudinal and azimuthally-symmetric transverse "Gubser flow" using leading-order anisotropic hydrodynamics. This is accomplished by assuming that the one-particle distribution function is ellipsoidally-symmetric in the momenta conjugate to the de Sitter coordinates used to parameterize the Gubser flow. We then...
LongGang Pang (Lawrence Berkeley National Laboratory)
9/29/15, 11:10 AM
The decorrelation of 2nd and 3rd order anisotropic flow along longitudinal direction with large pseudorapidity η gap is investigated in event-by-event (3+1)D ideal hydrodynamics with fluctuating initial conditions from A MultiPhase Transport (AMPT) model. The agreement between our results and CMS data for all available centralities in Pb+Pb collisions at LHC suggests that the string...
Koichi Murase (The University of Tokyo)
9/29/15, 11:30 AM
Thermal fluctuations arising during hydrodynamic evolution of the system (a.k.a., *hydrodynamic fluctuations*)  play an important role in event-by-event hydrodynamic simulations. For example, entropy production fluctuates during the expansion even if we start from a common initial condition in a macroscopic sense . On the other hand, the effect of the fluctuations must be...
320. The Rapidity Density Distributions and Longitudinal Expansion Dynamics of Identified Pions from the STAR Beam Energy Scan
9/29/15, 11:50 AM
The Beam Energy Scan (BES) at the Relativistic Heavy-Ion Collider was proposed to characterize the properties of the medium produced in heavy-ion interactions over a broad range of baryon chemical potential. The aptitude of the STAR detector for mid-rapidity measurements has previously been leveraged to measure identified particle yields and spectra to extract bulk properties for the BES...
697. Studies on longitudinal fluctuations of anisotropy flow event planes in PbPb and pPb collisions at CMS
Maxime Guilbaud (Rice University (US))
9/29/15, 12:10 PM
Most studies of anisotropy flow phenomena have assumed a global flow phase angle (or event plane angle) that is boost invariant in pseudorapidity ($\eta$). It was realized in recent years that this assumption may not be valid in presence of initial-state fluctuations, especially along the longitudinal direction. The effect of eta-dependent event plane fluctuations would break the factorization...