A simple description of holographic domain walls in confining theories -- extended hydrodynamics

Abstract

In the context of theories with a first order phase transition, we propose a general covariant description of coexisting phases separated by domain walls using an additional order parameter-like degree of freedom. In the case of a holographic Witten model with a confining and deconfined phase, the resulting model extends hydrodynamics and has a simple formulation in terms of a spacetime action with corresponding expressions for the energy-momentum tensor. The proposed description leads to simple analytic profiles of domain walls, including expressions for surface tension density, which agree nicely with holographic numerical solutions, despite the apparent complexity of those gravitational backgrounds.

51 pages, 11 figures. v2: references updated

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Cited by in corpus (5)

• Holographic Bubbles with Jecco: Expanding, Collapsing and Critical
• Gravitational Waves at Strong Coupling from an Effective Action
• A perfect fluid hydrodynamic picture of domain wall velocities at strong coupling
• Effective actions and bubble nucleation from holography
• Correlations of mixed systems in confining backgrounds