Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solitonic Excitations in Collisions Of Superfluid Nuclei   We investigate the role of the pairing field dynamics in low-energy heavy ion
reactions within the nuclear time-dependent density functional theory extended
to superfluid systems. Recently, we have reported on unexpectedly large effects
associated with the relative phase of the pairing field of colliding nuclei on
the reaction outcomes, such as the total kinetic energy and the fusion cross
section [P. Magierski, K. Sekizawa, and G. Wlaz{\l}owski, arXiv:1611.10261
[nucl-th]]. We have elucidated that the effects are due to creation of a
"domain wall" or a "solitonic structure" of the pairing field in the neck
region, which hinders energy dissipation as well as the neck formation, leading
to significant changes of the reaction dynamics. The situation nicely mimics
the one extensively studied experimentally with ultracold atomic gases, where
two clouds of superfluid atoms possessing different phases of the pairing field
are forced to merge, creating various topological excitations, quantum vortices
and solitons, as well as Josephson currents. In this paper, we present
unpublished results for a lighter system, namely, $^{44}$Ca+$^{44}$Ca. It is
shown that the pairing effects on the fusion hindrance are rather small in
lighter systems, due to a strong tendency towards fusion, which is consistent
with an earlier study.

32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas