Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Irreversible dynamics of vortex reconnections in quantum fluids   We statistically study vortex reconnections in quantum fluids by evolving
different realizations of vortex Hopf links using the Gross--Pitaevskii model.
Despite the time-reversibility of the model, we report a clear evidence that
the dynamics of the reconnection process is time-irreversible, as reconnecting
vortices tend to separate faster than they approach. Thanks to a matching
theory devised concurrently in Proment and Krstulovic (arXiv:2005.02047), we
quantitatively relate the origin of this asymmetry to the generation of a sound
pulse after the reconnection event. Our results have the prospect of being
tested in several quantum fluid experiments and, theoretically, may shed new
light on the energy transfer mechanisms in both classical and quantum turbulent
fluids.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org