Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical point in finite density lattice QCD by canonical approach   We propose a method to find the QCD critical point at finite density
calculating the canonical partition function ${\cal Z}_{\rm C} (T,N)$ by
Monte-Carlo simulations of lattice QCD, and analyze data obtained by a
simulation with two-flavor p4-improved staggered quarks with pion mass $m_{\pi}
\approx 770 {\rm MeV}$. It is found that the shape of an effective potential
changes gradually as the temperature decreases and a first order phase
transition appears in the low temperature and high density region. This result
strongly suggests the existence of the critical point in the $(T, \mu_q)$ phase
diagram.

25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin