Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geometric Background for Thermal Field Theories   We study a new spacetime which is shown to be the general geometrical
background for Thermal Field Theories at equilibrium. The different formalisms
of Thermal Field Theory are unified in a simple way in this spacetime. The set
of time-paths used in the Path Ordered Method is interpreted in geometrical
terms.

10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph