Sean A. Hartnoll

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We show that a simple gravitational theory can provide a holographically dual description of a superconductor. There is a critical temperature, below which a charged condensate forms via a second order phase transition and the (dc) conductivity becomes infinite. The frequency dependent conductivity develops a gap determined by the condensate. We find(More)
We show that the E − S ∼ log S behaviour found for long strings rotating on AdS 5 × S 5 may be reproduced by membranes rotating on AdS 4 × S 7 and on a warped AdS 5 M-theory solution. We go on to obtain rotating membrane configurations with the same E − K ∼ log K relation on G 2 holonomy backgrounds that are dual to N = 1 gauge theories in four dimensions.(More)
We calculate the electrical and thermal conductivities and the thermoelectric coefficient of a class of strongly interacting 2+1 dimensional conformal field theories with anti-de Sitter space duals. We obtain these transport coefficients as a function of charge density, background magnetic field, temperature and frequency. We show that the thermal(More)
We initiate a holographic model building approach to 'strange metallic' phe-nomenology. Our model couples a neutral Lifshitz-invariant quantum critical theory , dual to a bulk gravitational background, to a finite density of gapped probe charge carriers, dually described by D-branes. In the physical regime of temperature much lower than the charge density(More)
We find explicit probe D3-brane solutions in the infrared of the Maldacena-Nuñez background. The solutions describe deformed baryon vertices: q external quarks are separated in spacetime from the remaining N − q. As the separation is taken to infinity we recover known solutions describing infinite confining strings in N = 1 gauge theory. We present results(More)