Extension of KoMPoST to (3+1)D non-boost-invariant pre-equilibrium dynamics via kinetic theory response functions, chained into a full McDIPPER+KoMPoST-3D+CLVisc+SMASH simulation chain to study sensitivity of longitudinal flow to hydrodynamic start time.
Continuous description of fluctuating eccentricities
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We consider the initial energy density in the transverse plane of a high energy nucleus-nucleus collision as a random field $\rho(\x)$, whose probability distribution $P[\rho]$, the only ingredient of the present description, encodes all possible sources of fluctuations. We argue that it is a local Gaussian, with a short-range 2-point function, and that the fluctuations relevant for the calculation of the eccentricities that drive the anisotropic flow have small relative amplitudes. In fact, this 2-point function, together with the average density, contains all the information needed to calculate the eccentricities and their variances, and we derive general model independent expressions for these quantities. The short wavelength fluctuations are shown to play no role in these calculations, except for a renormalization of the short range part of the 2-point function. As an illustration, we compare to a commonly used model of independent sources, and recover the known results of this model.
verdicts
UNVERDICTED 3representative citing papers
A new model of energy density fluctuations in heavy-ion collisions, built from elementary 1/r^2 sources, reproduces CGC one- and two-point functions to leading-log accuracy and explains the centrality dependence of both elliptic and triangular flow.
Volume variation with multiplicity in ultracentral collisions is small when total entropy scales with nuclear mass number, as shown by relating it to initial density fluctuation profiles.
citing papers explorer
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(3+1)D event-by-event pre-equilibrium dynamics in heavy-ion collisions
Extension of KoMPoST to (3+1)D non-boost-invariant pre-equilibrium dynamics via kinetic theory response functions, chained into a full McDIPPER+KoMPoST-3D+CLVisc+SMASH simulation chain to study sensitivity of longitudinal flow to hydrodynamic start time.
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Primordial fluctuations in heavy-ion collisions
A new model of energy density fluctuations in heavy-ion collisions, built from elementary 1/r^2 sources, reproduces CGC one- and two-point functions to leading-log accuracy and explains the centrality dependence of both elliptic and triangular flow.
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The size of the quark-gluon plasma in ultracentral collisions: impact of initial density fluctuations on the average transverse momentum
Volume variation with multiplicity in ultracentral collisions is small when total entropy scales with nuclear mass number, as shown by relating it to initial density fluctuation profiles.