Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vacuum energy in some particular quantum field theories   We study the properties of a class of quantum field theories endowed with an
equal number of anti commuting and commuting field variables, the most common
example being the supersymmetric models. Based on the scaling properties of the
partition function we find that these theories have the quantum energy momentum
tensor associated to dilatations and thus the vacuum energy equal to zero.

29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg