Outputs (69)

Holographic transport and density waves (2019)
Journal Article
Donos, A., & Pantelidou, C. (2019). Holographic transport and density waves. Journal of High Energy Physics, 2019(5), Article 79. https://doi.org/10.1007/jhep05%282019%29079

We consider transport of heat and charge in holographic lattices which are phases of strongly coupled matter in which translations are broken explicitly. In these systems, we study a spontaneous density wave that breaks translations incommensurately... Read More about Holographic transport and density waves.

Incoherent transport for phases that spontaneously break translations (2018)
Journal Article
Donos, A., Gauntlett, J. P., Griffin, T., & Ziogas, V. (2018). Incoherent transport for phases that spontaneously break translations. Journal of High Energy Physics, 2018(4), Article 53. https://doi.org/10.1007/jhep04%282018%29053

We consider phases of matter at finite charge density which spontaneously break spatial translations. Without taking a hydrodynamic limit we identify a boost invariant incoherent current operator. We also derive expressions for the small frequency be... Read More about Incoherent transport for phases that spontaneously break translations.

Boomerang RG flows with intermediate conformal invariance (2018)
Journal Article
Donos, A., Gauntlett, J. P., Rosen, C., & Sosa-Rodriguez, O. (2018). Boomerang RG flows with intermediate conformal invariance. Journal of High Energy Physics, 2018(04), Article 017. https://doi.org/10.1007/jhep04%282018%29017

For a class of D = 5 holographic models we construct boomerang RG flow solutions that start in the UV at an AdS5 vacuum and end up at the same vacuum in the IR. The RG flows are driven by deformations by relevant operators that explicitly break trans... Read More about Boomerang RG flows with intermediate conformal invariance.

Diffusion for holographic lattices (2018)
Journal Article
Donos, A., Gauntlett, J. P., & Ziogas, V. (2018). Diffusion for holographic lattices. Journal of High Energy Physics, 2018(3), Article 056. https://doi.org/10.1007/jhep03%282018%29056

We consider black hole spacetimes that are holographically dual to strongly coupled field theories in which spatial translations are broken explicitly. We discuss how the quasinormal modes associated with diffusion of heat and charge can be systemati... Read More about Diffusion for holographic lattices.

Diffusion in inhomogeneous media (2017)
Journal Article
Donos, A., Gauntlett, J. P., & Ziogas, V. (2017). Diffusion in inhomogeneous media. Physical Review D, 96(12), Article 125003. https://doi.org/10.1103/physrevd.96.125003

We consider the transport of conserved charges in spatially inhomogeneous quantum systems with a discrete lattice symmetry. We analyze the retarded two-point functions involving the charges and the associated currents at long wavelengths, compared to... Read More about Diffusion in inhomogeneous media.

Boomerang RG flows in M-theory with intermediate scaling (2017)
Journal Article
Donos, A., Gauntlett, J. P., Rosen, C., & Sosa-Rodriguez, O. (2017). Boomerang RG flows in M-theory with intermediate scaling. Journal of High Energy Physics, 2017(7), Article 128. https://doi.org/10.1007/jhep07%282017%29128

We construct novel RG flows of D=11 supergravity that asymptotically approach AdS4 × S7 in the UV with deformations that break spatial translations in the dual field theory. In the IR the solutions return to exactly the same AdS4 × S7 vacuum, with a... Read More about Boomerang RG flows in M-theory with intermediate scaling.

Holographic DC conductivity and Onsager relations (2017)
Journal Article
Donos, A., Gauntlett, J. P., Griffin, T., Lohitsiri, N., & Melgar, L. (2017). Holographic DC conductivity and Onsager relations. Journal of High Energy Physics, 2017(7), Article 6. https://doi.org/10.1007/jhep07%282017%29006

Within holography the DC conductivity can be obtained by solving a system of Stokes equations for an auxiliary fluid living on the black hole horizon. We show that these equations can be derived from a novel variational principle involving a function... Read More about Holographic DC conductivity and Onsager relations.

DC conductivity and higher derivative gravity (2017)
Journal Article
Donos, A., Gauntlett, J. P., Griffin, T., & Melgar, L. (2017). DC conductivity and higher derivative gravity. Classical and Quantum Gravity, 34(13), Article 135015. https://doi.org/10.1088/1361-6382/aa744a

For Gauss–Bonnet gravity and in the context of holography we show how the thermal DC conductivity can be obtained by solving a generalised system of Stokes equations for an auxiliary fluid on a curved black hole horizon. For more general higher deriv... Read More about DC conductivity and higher derivative gravity.

Diffusion and chaos from near AdS2 horizons (2017)
Journal Article
Blake, M., & Donos, A. (2017). Diffusion and chaos from near AdS2 horizons. Journal of High Energy Physics, 2017(2), Article 13. https://doi.org/10.1007/jhep02%282017%29013

We calculate the thermal diffusivity D = κ/cρ and butterfly velocity vB in holographic models that flow to AdS2 × Rd fixed points in the infra-red. We show that both these quantities are governed by the same irrelevant deformation of AdS2 and hence e... Read More about Diffusion and chaos from near AdS2 horizons.

Thermal backflow in CFTs (2017)
Journal Article
Banks, E., Donos, A., Gauntlett, J. P., Griffin, T., & Melgar, L. (2017). Thermal backflow in CFTs. Physical Review D, 95(2), Article 025022. https://doi.org/10.1103/physrevd.95.025022

We study the thermal transport properties of general conformal field theories (CFTs) on curved spacetimes in the leading order viscous hydrodynamic limit. At the level of linear response, we show that the thermal transport is governed by a system of... Read More about Thermal backflow in CFTs.