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8 papers found.
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On the surface of superfluids

Developing on a recent work on localized bubbles of ordinary relativistic fluids, we study the comparatively richer leading order surface physics of relativistic superfluids, coupled to an arbitrary stationary background metric and gauge field in 3 + 1 and 2 + 1 dimensions. The analysis is performed with the help of a Euclidean effective action in one lower dimension, written in ...

Gravitational tension, spacetime pressure and black hole volume

We study the first law of black hole thermodynamics in the presence of surrounding gravitational fields and argue that variations of these fields are naturally incorporated in the first law by defining gravitational tension or gravitational binding energy. We demonstrate that this notion can also be applied in Anti-de Sitter spacetime, in which the surrounding gravitational field ...

Surface transport in plasma-balls

We study the surface transport properties of stationary localized configurations of relativistic fluids to the first two non-trivial orders in a derivative expansion. By demanding that these finite lumps of relativistic fluid are described by a thermal partition function with arbitrary stationary background metric and gauge fields, we are able to find several constraints among ...

Forced fluid dynamics from blackfolds in general supergravity backgrounds

We present a general treatment of the leading order dynamics of the collective modes of charged dilatonic p-brane solutions of (super) gravity theories in arbitrary backgrounds. To this end we employ the general strategy of the blackfold approach which is based on a long-wavelength derivative expansion around an exact or approximate solution of the (super)gravity equations of ...

New geometries for black hole horizons

We construct several classes of worldvolume effective actions for black holes by integrating out spatial sections of the worldvolume geometry of asymptotically flat black branes. This provides a generalisation of the blackfold approach for higher-dimensional black holes and yields a map between different effective theories, which we exploit by obtaining new hydrodynamic and elastic ...

(Non)-dissipative hydrodynamics on embedded surfaces

Jay Armas 0 0 Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern , Sidlerstrasse 5, 3012-Bern, Switzerland We construct the theory of dissipative

Constraints on the effective fluid theory of stationary branes

Jay Armas 1 Troels Harmark 0 0 The Niels Bohr Institute, Copenhagen University , Blegdamsvej 17, DK-2100 Copenhagen , Denmark 1 Albert Einstein Center for Fundamental Physics, University of Bern

Black probes of Schrödinger spacetimes

Jay Armas 0 Matthias Blau 0 0 Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern , Sidlerstrasse 5, 3012-Bern, Switzerland We consider black