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Origin of the Drude peak and of zero sound in probe brane holography
/ Chen, Chi-Fang ; Lucas, Andrew
At zero temperature, the charge current operator appears to be conserved, within linear response, in certain holographic probe brane models of strange metals. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.10.023
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Spread of entanglement in a Sachdev-Ye-Kitaev chain
/ Gu, Yingfei ; Lucas, Andrew ; Qi, Xiao-Liang
We study the spread of Rényi entropy between two halves of a Sachdev-Ye-Kitaev (SYK) chain of Majorana fermions, prepared in a thermofield double (TFD) state. [...]
Published in JHEP 1709 (2017) 120
10.1007/JHEP09(2017)120
arXiv:1708.00871
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Quantum critical response: from conformal perturbation theory to holography
/ Lucas, Andrew ; Sierens, Todd ; Witczak-Krempa, William
We discuss dynamical response functions near quantum critical points, allowing for both a finite temperature and detuning by a relevant operator. [...]
Published in JHEP 1707 (2017) 149
10.1007/JHEP07(2017)149
arXiv:1704.05461
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Magnetoresistance in relativistic hydrodynamics without anomalies
/ Baumgartner, Andrew ; Karch, Andreas ; Lucas, Andrew
We present expressions for the magnetoconductivity and the magnetoresistance of a strongly interacting metal in 3 + 1 dimensions, derivable from relativistic hydrodynamics. [...]
Published in JHEP 1706 (2017) 054
10.1007/JHEP06(2017)054
arXiv:1704.01592v2
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Charge diffusion and the butterfly effect in striped holographic matter
/ Lucas, Andrew ; Steinberg, Julia
Recently, it has been proposed that the butterfly velocity — a speed at which quantum information propagates — may provide a fundamental bound on diffusion constants in dirty incoherent metals. [...]
Published in JHEP 1610 (2016) 143
10.1007/JHEP10(2016)143
arXiv:1608.03286
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Conductivity bounds in probe brane models
/ Ikeda, Tatsuhiko ; Lucas, Andrew ; Nakai, Yuichiro
We discuss upper and lower bounds on the electrical conductivity of finite temperature strongly coupled quantum field theories, holographically dual to probe brane models, within linear response. [...]
Published in JHEP 1604 (2016) 007
10.1007/JHEP04(2016)007
arXiv:1601.07882
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Hydrodynamic transport in strongly coupled disordered quantum field theories
/ Lucas, Andrew
We compute direct current thermoelectric transport coefficients in strongly coupled quantum field theories without long lived quasiparticles, at finite temperature and charge density, and disordered on long wavelengths compared to the length scale of local thermalization. [...]
Published in New J. Phys. 17 (2015) 113007
10.1088/1367-2630/17/11/113007
arXiv:1506.02662
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Conductivity of a strange metal: from holography to memory functions
/ Lucas, Andrew
We study the electrical response of a wide class of strange metal phases without quasiparticles at finite temperature and charge density, with explicitly broken translational symmetry, using holography. [...]
Published in JHEP 1503 (2015) 071
10.1007/JHEP03(2015)071
arXiv:1501.05656
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Conductivity of weakly disordered strange metals: From conformal to hyperscaling-violating regimes
/ Lucas, Andrew ; Sachdev, Subir
We present a semi-analytic method for constructing holographic black holes that interpolate from anti-de Sitter space to hyperscaling-violating geometries. [...]
Published in Nuclear Physics B 892 (2015) 239-268
10.1016/j.nuclphysb.2015.01.017
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