Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The phase diagram of the three-dimensional Z2 gauge Higgs system at zero
  and finite temperature   We study the effect of adding a matter field to the Z2 gauge model in three
dimensions at zero and finite temperature. Up to a given value of the parameter
regulating the coupling, the matter field produces a slight shift of the
transition line without changing the universality class of the pure gauge
theory, as seen by finite size scaling analysis or by comparison, in the finite
temperature case, to exact formulas of conformal field theory. At zero
temperature the critical line turns into a first-order transition. The fate of
this kind of transition in the finite temperature case is discussed.

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The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
5
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: q-fin
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org