Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Longitudinal fluid response and pseudorapidity dependent flow in
  relativistic heavy-ion collisions   We study the pseudorapidity dependent hydrodynamic response in heavy-ion
collisions. A differential hydrodynamic relation is obtained for elliptic flow.
Using event-by-event simulations of 3+1D MUSIC, with initial conditions
generated via a multi-phase transport (AMPT) model, the differential response
relation is verified. Based on the response relation, we find that the
two-point correlation of elliptic flow in pseudorapidity are separated into the
fluid response and the two-point correlation of initial eccentricity.

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The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc