Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mean-field construction for spectrum of one-dimensional Bose polaron   The full momentum dependence of spectrum of a point-like impurity immersed in
a dilute one-dimensional Bose gas is calculated on the mean-field level. In
particular we elaborate, to the finite-momentum Bose polaron, the path-integral
approach whose semi-classical approximation leads to the conventional
mean-field treatment of the problem while quantum corrections can be easily
accounted by standard loop expansion techniques. The extracted low-energy
parameters of impurity spectrum, namely, the binding energy and the effective
mass of particle, are shown to be in qualitative agreement with the results of
quantum Monte Carlo simulations.

35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex