Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse force on a quantized vortex in a superfluid   We have derived an exact expression for the total nondissipative transverse
force acting on a quantized vortex moving in a uniform background. The
derivation is valid for neutral boson or fermion superfluids, provided the
order parameter is a complex scalar quantity. This force is determined by the
one-particle density matrix far away from the vortex core, and is found to be
the Magnus force proportional to the superfluid density. We conclude that
contributions of the localized core states do not change this force.

6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys