Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Status of Lattice Studies of the QCD Phase Diagram   Determining the QCD phase diagram is a pressing task in view of its relevance
for nuclear and astro-particle physics programmes. We review the current status
of lattice calculations of the phase diagram in the (T,\mu_B)-plane for baryon
chemical potentials \mu_B < 500 MeV. At \mu_B=0, simulations of staggered
fermion actions predict the quark hadron transition to be a crossover in the
continuum limit. As a baryon chemical potential is turned on, there is mounting
evidence on coarse lattices for the crossover to weaken, rather than turning
into a true phase transition at a critical point, as predicted by earlier
simulations.

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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: stat