Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective string theory for vortex lines in fluids and superfluids   We discuss the effective string theory of vortex lines in ordinary fluids and
low-temperature superfluids, by describing the bulk fluid flow in terms of a
two-form field to which vortex lines can couple. We derive the most general
low-energy effective Lagrangian that is compatible with (spontaneously broken)
Poincare invariance and worldsheet reparameterization invariance. This
generalizes the effective action developed by Lund and Regge and by Endlich and
Nicolis. By applying standard field-theoretical techniques, we show that
certain low-energy coupling constants -- most notably the string tension --
exhibit RG running already at the classical level. We discuss applications of
our techniques to the study of Kelvin waves, vortex rings, and the coupling to
bulk sound modes.

20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
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The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci