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Relativistic Fluids, Hydrodynamic Frames and their Galilean versus Carrollian Avatars

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arxiv 2205.09142 v2 pith:6ZYVETGL submitted 2022-05-18 hep-th gr-qcphysics.flu-dyn

Relativistic Fluids, Hydrodynamic Frames and their Galilean versus Carrollian Avatars

classification hep-th gr-qcphysics.flu-dyn
keywords carrolliangalileaninvarianceequationsrelativisticagreecurrentsdynamics
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We comprehensively study Galilean and Carrollian hydrodynamics on arbitrary backgrounds, in the presence of a matter/charge conserved current. For this purpose, we follow two distinct and complementary paths. The first is based on local invariance, be it Galilean or Carrollian diffeomorphism invariance, possibly accompanied by Weyl invariance. The second consists in analyzing the relativistic fluid equations at large or small speed of light, after choosing an adapted gauge, ADM-Zermelo for the former and Papapetrou-Randers for the latter. Unsurprisingly, the results agree, but the second approach is superior as it effortlessly captures more elaborate situations with multiple degrees of freedom. It furthermore allows to investigate the fate of hydrodynamic-frame invariance in the two limits at hand, and conclude that its breaking (in the Galilean) or its preservation (in the Carrollian) are fragile consequences of the behaviour of transport attributes at large or small $c$. Both methods do also agree on the doom of Noetherian currents generated in the relativistic theory by isometries: non-trivial currents are not always guaranteed in Newton-Cartan or Carroll spacetimes as a consequence of Galilean or Carrollian isometries. Comparison of Galilean and Carrollian fluid equations exhibits a striking but often superficial resemblance, which we comment in relation to black-hole horizon dynamics, awkwardly akin to Navier-Stokes equations. This congruity is authentic in one instance though and turns out then to describe Aristotelian dynamics, which is the last item in our agenda.

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Cited by 9 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Carrollian limit of NS-NS and Heterotic Supergravity

    hep-th 2026-07 conditional novelty 7.0

    A finite Carrollian limit of NS-NS and heterotic supergravity is constructed by field expansion, including a gauge sector, a Green-Schwarz mechanism analysis, and a finite leading α' correction.

  2. Carrollian limit of NS-NS and Heterotic Supergravity

    hep-th 2026-07 conditional novelty 7.0

    Ultra-relativistic expansion plus dilaton scaling produces finite covariant Carrollian NS-NS and heterotic supergravity actions, with trivializable Green-Schwarz for the 1-form and finite leading Riem^{2} α' corrections.

  3. Kinetic Theory of Carroll Hydrodynamics

    hep-th 2026-05 unverdicted novelty 7.0

    A microscopic derivation of Carrollian fluid equations from a statistical mechanics of interacting instantonic branes, plus initial elements of Carrollian thermodynamics.

  4. Kinetic Theory of Carroll Hydrodynamics

    hep-th 2026-05 unverdicted novelty 7.0

    A kinetic theory of interacting instantonic branes yields a first-principles derivation of Carrollian fluid equations and initial elements of Carrollian thermodynamics.

  5. A Twisted Origin for Magnetic Carroll Supersymmetry

    hep-th 2026-03 unverdicted novelty 7.0

    Magnetic Carroll supersymmetry descends from a twisted relativistic parent rather than naive contraction, realized in 3D N=2 with vector multiplet action whose conformal extension matches global super-BMS4.

  6. Carroll hydrodynamics with spin

    hep-th 2026-01 unverdicted novelty 6.0

    Carroll hydrodynamics with spin is obtained as the c→0 limit of relativistic hydrodynamics with spin, extending the description of boost-invariant flows.

  7. Radiation in Fluid/Gravity and the Flat Limit

    hep-th 2025-08 unverdicted novelty 6.0

    Establishes a holographic link between bulk gravitational radiation and dissipative corrections plus entropy production in boundary fluids, then constructs Carrollian analogues and celestial observables in the flat limit.

  8. Nonperfect Carrollian Fluids Through Holography

    hep-th 2026-01 conditional novelty 4.0

    Bulk gravitational radiation, diagnosed by the Fernández-Álvarez–Senovilla criterion, is dual to dissipative (Carrollian) boundary-fluid data, with an entropy-flux law and a Robinson-Trautman worked example.

  9. Aspects of Non-Relativistic Supersymmetric Theories

    hep-th 2026-04 unverdicted novelty 2.0

    Discusses features of non-relativistic supersymmetric field theories from Galilean and Carrollian points of view to aid construction of electric and magnetic variants.