Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statistical Mechanics of Equilibrium and Nonequilibrium Phase
  Transitions: The Yang-Lee Formalism   Showing that the location of the zeros of the partition function can be used
to study phase transitions, Yang and Lee initiated an ambitious and very
fruitful approach. We give an overview of the results obtained using this
approach. After an elementary introduction to the Yang-Lee formalism, we
summarize results concerning equilibrium phase transitions. We also describe
recent attempts and breakthroughs in extending this theory to nonequilibrium
phase transitions.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con