Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The phase structure of QCD   We review recent results on the phase structure of QCD and bulk QCD
thermodynamics. In particular we discuss how universal critical scaling related
to spontaneous breaking of the chiral symmetry manifests itself in recent
lattice QCD simulations and how the knowledge on non-universal scaling
parameter can be utilized in the exploration of the QCD phase diagram. We also
show how various (generalized) susceptibilities can be employed to characterize
properties of QCD matter at low and hight temperatures, related to deconfining
aspects of the QCD transition. Finally, we address the input these lattice QCD
calculation can provide for our under standing of the matter created in heavy
ion collisions and in particular on the freeze-out conditions met in the
hydrodynamic evolution of this matter.

16
The categories of this paper are: stat
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn