Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 2-group global symmetries, hydrodynamics and holography   2-group global symmetries are a particular example of how higher-form and
conventional global symmetries can fuse together into a larger structure. We
construct a theory of hydrodynamics describing the finite-temperature
realization of a 2-group global symmetry composed out of $U(1)$ zero-form and
$U(1)$ one-form symmetries. We study aspects of the thermodynamics from a
Euclidean partition function and derive constitutive relations for ideal
hydrodynamics from various points of view. Novel features of the resulting
theory include an analogue of the chiral magnetic effect and a chiral sound
mode propagating along magnetic field lines. We also discuss a minimalist
holographic description of a theory dual to 2-group global symmetry and verify
predictions from hydrodynamic descriptions. Along the way we clarify some
aspects of symmetry breaking in higher-form theories at finite temperature.

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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg