Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic collective phenomena in ultra-relativistic nuclear
  collisions   For a detailed review of this subject I refer to a recent paper
\cite{Voloshin:2008dg}; in this talk I only very briefly comment on a few most
important questions: (a) Very recent significant progress in viscous
hydrodynamics calculations (b) Initial eccentricity/flow fluctuations, the
effect of which has been clarified recently (c) Initial conditions, in
particular the role of the gradients in the initial velocity field, (d)
Puzzling system size dependence of directed flow (e) Azimuthal correlations
that are sensitive to the strong parity violation (f) Future measurements at
RHIC and LHC, including pp-collisions

18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph