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Nearly critical superfluids in Keldysh-Schwinger formalism (2024)
Journal Article
Donos, A., & Kailidis, P. (2024). Nearly critical superfluids in Keldysh-Schwinger formalism. Journal of High Energy Physics, 2024(1), Article 110. https://doi.org/10.1007/jhep01%282024%29110

We examine the effective theory of critical dynamics near superfluid phase transitions in the framework of the Keldysh-Schwinger formalism. We focus on the sector capturing the dynamics of the complex order parameter and the conserved current corresp... Read More about Nearly critical superfluids in Keldysh-Schwinger formalism.

Nearly critical holographic superfluids (2022)
Journal Article
Donos, A., & Kailidis, P. (2022). Nearly critical holographic superfluids. Journal of High Energy Physics, 2022(12), Article 28. https://doi.org/10.1007/jhep12%282022%29028

We study the nearly critical behaviour of holographic superfluids at finite temperature and chemical potential in their probe limit. This allows us to examine the coupled dynamics of the full complex order parameter with the charge density of the sys... Read More about Nearly critical holographic superfluids.

Dissipative effects in finite density holographic superfluids (2022)
Journal Article
Donos, A., & Kailidis, P. (2022). Dissipative effects in finite density holographic superfluids. Journal of High Energy Physics, 2022(11), Article 53. https://doi.org/10.1007/jhep11%282022%29053

We derive the leading dissipative corrections of holographic superfluids at finite temperature and chemical potential by employing our recently developed techniques to study dissipative effects in the hydrodynamic limit of holographic theories. As pa... Read More about Dissipative effects in finite density holographic superfluids.

Holographic dissipation from the symplectic current (2022)
Journal Article
Donos, A., Kailidis, P., & Pantelidou, C. (2022). Holographic dissipation from the symplectic current. Journal of High Energy Physics, 2022(10), Article 58. https://doi.org/10.1007/jhep10%282022%29058

We develop analytic techniques to construct the leading dissipative terms in a derivative expansion of holographic fluids. Our basic ingredient is the Crnkovic-Witten symplectic current of classical gravity which we use to extract the dissipative tra... Read More about Holographic dissipation from the symplectic current.

Higgs/amplitude mode dynamics from holography (2022)
Journal Article
Donos, A., & Pantelidou, C. (2022). Higgs/amplitude mode dynamics from holography. Journal of High Energy Physics, 2022(8), Article 246. https://doi.org/10.1007/jhep08%282022%29246

Second order phase transitions are universally driven by an order parameter which becomes trivial at the critical point. At the same time, collective excitations which involve the amplitude of the order parameter develop a gap which smoothly closes t... Read More about Higgs/amplitude mode dynamics from holography.

Dissipation in holographic superfluids (2021)
Journal Article
Donos, A., Kailidis, P., & Pantelidou, C. (2021). Dissipation in holographic superfluids. Journal of High Energy Physics, 2021(9), Article 134. https://doi.org/10.1007/jhep09%282021%29134

We study dissipation in holographic superfluids at finite temperature and zero chemical potential. The zero overlap with the heat current allows us to isolate the physics of the conserved current corresponding to the broken global U(1). By using anal... Read More about Dissipation in holographic superfluids.

Incoherent hydrodynamics of density waves in magnetic fields (2021)
Journal Article
Donos, A., Pantelidou, C., & Ziogas, V. (2021). Incoherent hydrodynamics of density waves in magnetic fields. Journal of High Energy Physics, 2021(5), Article 270. https://doi.org/10.1007/jhep05%282021%29270

We use holography to derive effective theories of fluctuations in spontaneously broken phases of systems with finite temperature, chemical potential, magnetic field and momentum relaxation in which the order parameters break translations. We analytic... Read More about Incoherent hydrodynamics of density waves in magnetic fields.

Holographic Abrikosov lattices (2020)
Journal Article
Donos, A., Gauntlett, J. P., & Pantelidou, C. (2020). Holographic Abrikosov lattices. Journal of High Energy Physics, 2020(7), Article 095. https://doi.org/10.1007/jhep07%282020%29095

We study black hole solutions of D = 4 Einstein-Maxwell theory coupled to a charged scalar field that are holographically dual to a d = 3 conformal field theory with a non-vanishing chemical potential and constant magnetic field. We numerically const... Read More about Holographic Abrikosov lattices.

Hydrodynamics of broken global symmetries in the bulk (2019)
Journal Article
Donos, A., Martin, D., Pantelidou, C., & Ziogas, V. (2019). Hydrodynamics of broken global symmetries in the bulk. Journal of High Energy Physics, 2019(10), Article 218. https://doi.org/10.1007/jhep10%282019%29218

We consider holographic theories at finite temperature in which a continuous global symmetry in the bulk is spontaneously broken. We study the linear response of operators in a regime which is dual to time dependent, long wavelength deformations of s... Read More about Hydrodynamics of broken global symmetries in the bulk.

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.

Holographic thermal DC response in the hydrodynamic limit (2017)
Journal Article
Banks, E., Donos, A., Gauntlett, J. P., Griffin, T., & Melgar, L. (2017). Holographic thermal DC response in the hydrodynamic limit. Classical and Quantum Gravity, 34(4), Article 045001. https://doi.org/10.1088/1361-6382/aa51df

We consider black hole solutions of Einstein gravity that describe deformations of CFTs at finite temperature in which spatial translations have been broken explicitly. We focus on deformations that are periodic in the non-compact spatial directions,... Read More about Holographic thermal DC response in the hydrodynamic limit.

Anisotropic plasmas from axion and dilaton deformations (2016)
Journal Article
Donos, A., Gauntlett, J. P., & Sosa-Rodriguez, O. (2016). Anisotropic plasmas from axion and dilaton deformations. Journal of High Energy Physics, 2016(11), Article 002. https://doi.org/10.1007/jhep11%282016%29002

We construct black hole solutions of type IIB supergravity that are holographically dual to anisotropic plasmas arising from deformations of an infinite class of four-dimensional CFTs. The CFTs are dual to AdS5 × X5, where X5 is an Einstein manifold,... Read More about Anisotropic plasmas from axion and dilaton deformations.

Holographic Magnetisation Density Waves (2016)
Journal Article
Donos, A., & Pantelidou, C. (2016). Holographic Magnetisation Density Waves. Journal of High Energy Physics, 2016(10), Article 038. https://doi.org/10.1007/jhep10%282016%29038

We numerically construct asymptotically AdS black brane solutions of D = 4 Einstein theory coupled to a scalar and two U(1) gauge fields. The solutions are holographically dual to d = 3 CFTs in a constant external magnetic field along one of the U(1)... Read More about Holographic Magnetisation Density Waves.

Minimally packed phases in holography (2016)
Journal Article
Donos, A., & Gauntlett, J. (2016). Minimally packed phases in holography. Journal of High Energy Physics, 2016(3), Article 148. https://doi.org/10.1007/jhep03%282016%29148

We numerically construct asymptotically AdS black brane solutions of D = 4 Einstein-Maxwell theory coupled to a pseudoscalar. The solutions are holographically dual to d = 3 CFTs at finite chemical potential and in a constant magnetic field, which sp... Read More about Minimally packed phases in holography.

DC conductivity of magnetised holographic matter (2016)
Journal Article
Donos, A., Gauntlett, J., Griffin, T., & Melgar, L. (2016). DC conductivity of magnetised holographic matter. Journal of High Energy Physics, 2016(1), Article 113. https://doi.org/10.1007/jhep01%282016%29113

We consider general black hole solutions of Einstein-Maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density with nonvanishing magnetic fields and local magnetisation currents, which generically break... Read More about DC conductivity of magnetised holographic matter.

Navier-Stokes equations on black hole horizons and DC thermoelectric conductivity (2015)
Journal Article
Donos, A., & Gauntlett, J. P. (2015). Navier-Stokes equations on black hole horizons and DC thermoelectric conductivity. Physical Review D, 92(12), Article 121901(R). https://doi.org/10.1103/physrevd.92.121901

Within the context of the AdS/CFT correspondence, we show that the DC thermoelectric conductivity can be obtained by solving the linearized, time-independent, and forced Navier-Stokes equations on the black hole horizon for an incompressible and char... Read More about Navier-Stokes equations on black hole horizons and DC thermoelectric conductivity.

Thermoelectric DC conductivities and Stokes flows on black hole horizons (2015)
Journal Article
Banks, E., Donos, A., & Gauntlett, J. (2015). Thermoelectric DC conductivities and Stokes flows on black hole horizons. Journal of High Energy Physics, 2015(10), Article 103. https://doi.org/10.1007/jhep10%282015%29103

We consider a general class of electrically charged black holes of Einstein-Maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density which break translation invariance explicitly. We examine the lineari... Read More about Thermoelectric DC conductivities and Stokes flows on black hole horizons.

Magnetothermoelectric response from holography (2015)
Journal Article
Blake, M., Donos, A., & Lohitsiri, N. (2015). Magnetothermoelectric response from holography. Journal of High Energy Physics, 2015(8), Article 124. https://doi.org/10.1007/jhep08%282015%29124

In this note we study the effects of a magnetic field on transport using holographic models with broken translational invariance. We show that, after carefully sub-tracting off non-trivial magnetisation currents, it is possible to express the DC tran... Read More about Magnetothermoelectric response from holography.

Holographic Charge Oscillations (2015)
Journal Article
Blake, M., Donos, A., & Tong, D. (2015). Holographic Charge Oscillations. Journal of High Energy Physics, 2015(4), Article 019. https://doi.org/10.1007/jhep04%282015%29019

The Reissner-Nordström black hole provides the prototypical description of a holographic system at finite density. We study the response of this system to the presence of a local, charged impurity. Below a critical temperature, the induced charge den... Read More about Holographic Charge Oscillations.

Quantum critical transport and the hall angle in holographic models (2015)
Journal Article
Blake, M., & Donos, A. (2015). Quantum critical transport and the hall angle in holographic models. Physical Review Letters, 114(2), Article 021601. https://doi.org/10.1103/physrevlett.114.021601

We study the Hall conductivity in holographic models where translational invariance is broken by a lattice. We show that generic holographic theories will display a different temperature dependence in the Hall angle as to the dc conductivity. Our res... Read More about Quantum critical transport and the hall angle in holographic models.

The thermoelectric properties of inhomogeneous holographic lattices (2015)
Journal Article
Donos, A., & Gauntlett, J. (2015). The thermoelectric properties of inhomogeneous holographic lattices. Journal of High Energy Physics, 2015(1), https://doi.org/10.1007/jhep01%282015%29035

We consider inhomogeneous, periodic, holographic lattices of D = 4 Einstein-Maxwell theory. We show that the DC thermoelectric conductivity matrix can be expressed analytically in terms of the horizon data of the corresponding black hole solution. We... Read More about The thermoelectric properties of inhomogeneous holographic lattices.

Thermoelectric DC conductivities from black hole horizons (2014)
Journal Article
Donos, A., & Gauntlett, J. P. (2014). Thermoelectric DC conductivities from black hole horizons. Journal of High Energy Physics, 2014(11), https://doi.org/10.1007/jhep11%282014%29081

An analytic expression for the DC electrical conductivity in terms of black hole horizon data was recently obtained for a class of holographic black holes exhibiting momentum dissipation. We generalise this result to obtain analogous expressions for... Read More about Thermoelectric DC conductivities from black hole horizons.

Holographic Metals and Insulators with Helical Symmetry (2014)
Journal Article
Donos, A., Goutéraux, B., & Kiritsis, E. (2014). Holographic Metals and Insulators with Helical Symmetry. Journal of High Energy Physics, 2014(9), Article 038. https://doi.org/10.1007/jhep09%282014%29038

Homogeneous, zero temperature scaling solutions with Bianchi VII spatial geometry are constructed in Einstein-Maxwell-Dilaton theory. They correspond to quantum critical saddle points with helical symmetry at finite density. Assuming AdS 5 UV asympto... Read More about Holographic Metals and Insulators with Helical Symmetry.

Flowing from AdS5 to AdS3 with T 1,1 (2014)
Journal Article
Donos, A., & Gauntlett, J. P. (2014). Flowing from AdS5 to AdS3 with T 1,1. Journal of High Energy Physics, 2014(8), Article 006. https://doi.org/10.1007/jhep08%282014%29006

We construct supersymmetric domain wall solutions of type IIB supergravity that interpolate between AdS5 × T 1,1 in the UV and AdS3 × R 2 × S 2 × S 3 solutions in the IR. The R 2 factor can be replaced with a two-torus and then the solution describes... Read More about Flowing from AdS5 to AdS3 with T 1,1.

Novel metals and insulators from holography (2014)
Journal Article
Donos, A., & Gauntlett, J. P. (2014). Novel metals and insulators from holography. Journal of High Energy Physics, 2014(6), https://doi.org/10.1007/jhep06%282014%29007

Using simple holographic models in D = 4 spacetime dimensions we construct black hole solutions dual to d = 3 CFTs at finite charge density with a Q-lattice deformation. At zero temperature we find new ground state solutions, associated with broken t... Read More about Novel metals and insulators from holography.

Holographic Q-lattices (2014)
Journal Article
Donos, A., & Gauntlett, J. P. (2014). Holographic Q-lattices. Journal of High Energy Physics, 2014(4), Article 040. https://doi.org/10.1007/jhep04%282014%29040

We introduce a new framework for constructing black hole solutions that are holographically dual to strongly coupled field theories with explicitly broken translation invariance. Using a classical gravitational theory with a continuous global symmetr... Read More about Holographic Q-lattices.

Competing p-wave orders (2014)
Journal Article
Donos, A., Gauntlett, J. P., & Pantelidou, C. (2014). Competing p-wave orders. Classical and Quantum Gravity, 31(5), https://doi.org/10.1088/0264-9381/31/5/055007

We construct electrically charged, asymptotically AdS5 black hole solutions that are dual to d = 4 CFTs in a superfluid phase with either p-wave or (p + ip)-wave order. The two types of black holes have non-vanishing charged two-form in the bulk and... Read More about Competing p-wave orders.

Conformal field theories in d=4 with a helical twist (2014)
Journal Article
Donos, A., Gauntlett, J., & Pantelidou, C. (2014). Conformal field theories in d=4 with a helical twist. Physical Review D, 91(6), Article 066003. https://doi.org/10.1103/physrevd.91.066003

Within the context of holography we study the general class of d=4 conformal field theories (CFTs) after applying a universal helical deformation. At finite temperature we construct the associated black hole solutions of Einstein gravity, numerically... Read More about Conformal field theories in d=4 with a helical twist.

Interaction-driven localization in holography (2013)
Journal Article
Donos, A., & Hartnoll, S. A. (2013). Interaction-driven localization in holography. Nature Physics, 9(10), 649-655. https://doi.org/10.1038/nphys2701

Interaction-driven charge localization across a quantum phase transition involves a fundamental rearrangement of the low-energy degrees of freedom. This fact challenges weakly interacting quasiparticle descriptions of the physics. The canonical examp... Read More about Interaction-driven localization in holography.

On the thermodynamics of periodic AdS black branes (2013)
Journal Article
Donos, A., & Gauntlett, J. P. (2013). On the thermodynamics of periodic AdS black branes. Journal of High Energy Physics, 2013(10), Article 038. https://doi.org/10.1007/jhep10%282013%29038

We consider asymptotically AdS black brane solutions that are dual to CFTs with periodic dependence on the spatial directions, arising from either a spontaneous or an explicit breaking of translational symmetry. We derive a simple expression for the... Read More about On the thermodynamics of periodic AdS black branes.

Holographic charge density waves (2013)
Journal Article
Donos, A., & Gauntlett, J. P. (2013). Holographic charge density waves. Physical Review D, 87(12), https://doi.org/10.1103/physrevd.87.126008

We show that strongly coupled holographic matter at finite charge density can exhibit charge density wave phases which spontaneously break translation invariance while preserving time-reversal and parity invariance. We show that such phases are possi... Read More about Holographic charge density waves.

Striped phases from holography (2013)
Journal Article
Donos, A. (2013). Striped phases from holography. Journal of High Energy Physics, 2013(5), Article 59. https://doi.org/10.1007/jhep05%282013%29059

We discuss new types of second order phase transitions in holography by constructing striped black holes in D = 4 with AdS4 asymptotics. In the context of AdS/CFT, they provide the gravity duals to field theory phases in which translational symmetry... Read More about Striped phases from holography.

Competing orders in M-theory: superfluids, stripes and metamagnetism (2013)
Journal Article
Donos, A., Gauntlett, J. P., Sonner, J., & Withers, B. (2013). Competing orders in M-theory: superfluids, stripes and metamagnetism. Journal of High Energy Physics, 2013(3), Article 108. https://doi.org/10.1007/jhep03%282013%29108

We analyse the infinite class of d = 3 CFTs dual to skew-whiffed AdS 4 × SE 7 solutions of D = 11 supergravity at finite temperature and charge density and in the presence of a magnetic field. We construct black hole solutions corresponding to the un... Read More about Competing orders in M-theory: superfluids, stripes and metamagnetism.

Semi-local quantum criticality in string/M-theory (2013)
Journal Article
Donos, A., Gauntlett, J. P., & Pantelidou, C. (2013). Semi-local quantum criticality in string/M-theory. Journal of High Energy Physics, 2013(3), Article 103. https://doi.org/10.1007/jhep03%282013%29103

Semi-local quantum critical behaviour in D − 1 spacetime dimensions can be holographically described by metrics that are conformal to AdS 2 ×R D−2 , with the conformal factor characterised by a parameter η. We analyse such “η-geometries” in a top-dow... Read More about Semi-local quantum criticality in string/M-theory.

AdS/CFT (2006)
Journal Article
Donos, A., & Jevicki, A. (2006). AdS/CFT