Higher derivative corrections to incoherent metallic transport in holography

@article{Baggioli2016HigherDC,
  title={Higher derivative corrections to incoherent metallic transport in holography},
  author={Matteo Baggioli and Blaise Gout{\'e}raux and Elias Kiritsis and Wei-Jia Li},
  journal={Journal of High Energy Physics},
  year={2016},
  volume={2017},
  pages={1-32}
}
A bstractTransport in strongly-disordered, metallic systems is governed by diffusive processes. Based on quantum mechanics, it has been conjectured that these diffusivities obey a lower bound D/v2 ≳ ℏ/kBT , the saturation of which provides a mechanism for the T-linear resistivity of bad metals. This bound features a characteristic velocity v, which was later argued to be the butterfly velocity vB, based on holographic models of transport. This establishes a link between incoherent metallic… 

Universal bounds on transport in holographic systems with broken translations

We study the presence of universal bounds on transport in homogeneous holographic models with broken translations. We verify numerically that, in holographic systems with momentum dissipation, the

Weyl corrections to diffusion and chaos in holography

A bstractUsing holographic methods in the Einstein-Maxwell-dilaton-axion (EMDA) theory, it was conjectured that the thermal diffusion in a strongly coupled metal without quasi-particles saturates an

Coherent vs incoherent transport in holographic strange insulators

A bstractHolographic strange metals are known to have a power law resistivity rising with temperature, which is reminiscent of the strange metal phases in condensed matter systems. In some

Coherent transport in holographic strange insulators

Holographic strange metals are known to have a power law resistivity rising with temperature, which is reminiscent of the strange metal phases in condensed matter systems. In some holographic models,

Collective diffusion and quantum chaos in holography

We define a particular combination of charge and heat currents that is decoupled with the heat current. This “heat-decoupled” (HD) current can be transported by diffusion at long distances, when some

Non-equilibrium dynamics in Holography

In this thesis, we investigate aspects of non-equilibrium dynamics of strongly coupled field theories within holography. We establish a hydrodynamic description for anomalous quantum field theories

Quantum critical scaling and holographic bound for transport coefficients near Lifshitz points

The transport behavior of strongly anisotropic systems is significantly richer compared to isotropic ones. The most dramatic spatial anisotropy at a critical point occurs at a Lifshitz transition.

Transport at Strong Coupling and Black Hole Dynamics

In this thesis we study aspects of transport in strongly coupled quantum systems with broken translational symmetry. Using holographic duality, we also examine the associated dynamical problem in

Magnetotransport and complexity of holographic metal-insulator transitions

We study the magnetotransport in a minimal holographic setup of a metal- insulator transition in two spatial dimensions. Some generic features are obtained without referring to the non-linear details

Thermal diffusivity and chaos in metals without quasiparticles

We study the thermal diffusivity DT in models of metals without quasiparticle excitations (“strange metals”). The many-body quantum chaos and transport properties of such metals can be efficiently
...

References

SHOWING 1-10 OF 50 REFERENCES

On holographic disorder-driven metal-insulator transitions

A bstractWe give a minimal holographic model of a disorder-driven metal-insulator transition. It consists in a CFT with a charge sector and a translation-breaking sector that interact in the most

Charge transport in holography with momentum dissipation

A bstractIn this work, we examine how charge is transported in a theory where momentum is relaxed by spatially dependent, massless scalars. We analyze the possible IR phases in terms of various

Momentum dissipation and effective theories of coherent and incoherent transport

A bstractWe study heat transport in two systems without momentum conservation: a hydrodynamic system, and a holographic system with spatially dependent, massless scalar fields. When momentum

On effective holographic Mott insulators

A bstractWe present a class of holographic models that behave effectively as prototypes of Mott insulators — materials where electron-electron interactions dominate transport phenomena. The main

Absence of Disorder-Driven Metal-Insulator Transitions in Simple Holographic Models.

It is proved that the electrical conductivity is bounded from below by a universal minimal conductance: the quantum critical conductivity of a clean, charge-neutral plasma.

NONZERO-TEMPERATURE TRANSPORT NEAR QUANTUM CRITICAL POINTS

We describe the nature of charge transport at non-zero temperatures (T ) above the two-dimensional (d) superuid-insulator quantum critical point. We argue that the transport is characterized by

Locally critical resistivities from umklapp scattering.

It is shown that umklapp scattering by an ionic lattice in a locally critical theory leads to Γ∼T(2Δ(k(L))), and that scattering by random impurities in these locally critical theories gives a universal Γ ∼(log(1/T))(-1).

Thermoelectric transport in disordered metals without quasiparticles: The Sachdev-Ye-Kitaev models and holography

We compute the thermodynamic properties of the Sachdev-Ye-Kitaev (SYK) models of fermions with a conserved fermion number Q. We extend a previously proposed Schwarzian effective action to include a

Universality of the Mott–Ioffe–Regel limit in metals

The absence of resistivity saturation in many strongly correlated metals, including the high-temperature superconductors, is critically examined from the viewpoint of optical conductivity

Quantum phase transitions

Abstract We give a general introduction to quantum phase transitions in strongly correlated electron systems. These transitions, which occur at zero temperature when a non-thermal parameter g such as