Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vector resonances spin alignement as a probe of spin hydrodynamics and
  freeze-out   We argue that a detailed analysis of the spin alignement of vector mesons can
serve as a probe of two little-understood aspects of spin dynamics in the
vortical fluid: The degree of relaxation between vorticity and parton spin
polarization, and the degree of coherence of the hadron wavefunction at
freeze-out.
  We illustrate these with a coalescence model.

29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th