Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Lorentz symmetry breaking in a 4D massless four-fermion model   In this paper, we study the spontaneous Lorentz symmetry breaking for a
four-dimensional massless four-fermion model. Our methodology is based on use
of the rationalized propagator. We show that a bumblebee potential arises as a
result of one-loop calculations and displays nontrivial minima. Also we
demonstrate that a phase transition restoring Lorentz invariance can occur at a
finite temperature.

28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int