Covariant Galilean versus Carrollian hydrodynamics from relativistic fluids

Ciambelli, Luca; Marteau, Charles; Petkou, Anastasios C; Petropoulos, P Marios; Siampos, Konstadinos (2018). Covariant Galilean versus Carrollian hydrodynamics from relativistic fluids. Classical and quantum gravity, 35(16), p. 165001. Institute of Physics Publishing IOP 10.1088/1361-6382/aacf1a

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We provide the set of equations for non-relativistic fluid dynamics on arbitrary, possibly time-dependent spaces, in general coordinates. These equations are fully covariant under either local Galilean or local Carrollian transformations, and are obtained from standard relativistic hydrodynamics in the limit of infinite or vanishing velocity of light. All dissipative phenomena such as friction and heat conduction are included in our description. Part of our work consists in designing the appropriate coordinate frames for relativistic spacetimes, invariant under Galilean or Carrollian diffeomorphisms. The guide for the former is the dynamics of relativistic point particles, and leads to the Zermelo frame. For the latter, the relevant objects are relativistic instantonic space-filling branes in Randers–Papapetrou backgrounds. We apply our results for obtaining the general first-derivative-order Galilean fluid equations, in particular for incompressible fluids (Navier–Stokes equations) and further illustrate our findings with two applications: Galilean fluids in rotating frames or inflating surfaces and Carrollian conformal fluids on two-dimensional time-dependent geometries. The first is useful in atmospheric physics, while the dynamics emerging in the second is governed by the Robinson–Trautman equation, describing a Calabi flow on the surface, and known to appear when solving Einstein's equations for algebraically special Ricci-flat or Einstein spacetimes.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Siampos, Konstadinos

Subjects:

500 Science > 530 Physics

ISSN:

0264-9381

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

30 Aug 2018 09:39

Last Modified:

30 Oct 2019 22:16

Publisher DOI:

10.1088/1361-6382/aacf1a

ArXiv ID:

1802.05286

Additional Information:

Article No. 165001

BORIS DOI:

10.7892/boris.119613

URI:

https://boris.unibe.ch/id/eprint/119613

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