Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective potential in the BET formalism   We calculate the one-loop effective potential at finite temperature for a
system of massless scalar fields with quartic interaction $\lambda\phi^4$ in
the framework of the boundary effective theory (BET) formalism. The calculation
relies on the solution of the classical equation of motion for the field, and
Gaussian fluctuations around it. Our result is non-perturbative and differs
from the standard one-loop effective potential for field values larger than
$T/\sqrt{\lambda}$.

2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int