Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unambiguous one-loop quantum energies of 1+1 dimensional bosonic field
  configurations   We calculate one-loop quantum energies in a renormalizable self-interacting
theory in one spatial dimension by summing the zero-point energies of small
oscillations around a classical field configuration, which need not be a
solution of the classical field equations. We unambiguously implement standard
perturbative renormalization using phase shifts and the Born approximation. We
illustrate our method by calculating the quantum energy of a
soliton/antisoliton pair as a function of their separation. This energy
includes an imaginary part that gives a quantum decay rate and is associated
with a level crossing in the solutions to the classical field equation in the
presence of the source that maintains the soliton/antisoliton pair.

30
The categories of this paper are: q-alg
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph