We study the charge transport properties of fields confined to a (2+1)-dimensional defect coupled to (3+1)-dimensional super-Yang-Mills at large-Nc and strong coupling, using AdS/CFT techniques applied to linear response theory. The dual system is described by Nf probe D5or D7-branes in the gravitational background of Nc black D3-branes. Surprisingly, the transport properties of both defect CFT...

The review introduces the reader to a theoretical method describing the transport properties of dilute alloys on an ab initio basis. The calculations start from density or spin density functional theory using a Green function formalism to investigate the underlying electronic structure of the ideal and perturbed system on equal footing. The residual resistivity is calculated solving the quasicl...

We investigate the behavior of the shear viscosity eta(p) and the mass-dependent diffusion coefficient D(m,p) in the context of a simple model that, as the cross link density p is increased, undergoes a continuous transition from a fluid to a gel. The shear viscosity diverges at the gel point according to eta(p) approximately (p(c)-p)(-s) with s approximately 0.65. The diffusion constant shows ...

1. Introduction The discovery of the superconductivity in MgB 2 [1] at a temperature as high as 39 K has stimulated a enormous interest about the comprehension of its mechanism [2][3]. The study of the electron transport properties may give an insight into the normal state conduction process and into the electronic structure of MgB 2. From this point of view the results are contradictory. In fa...

Jolanta Stankiewicz,1,* Javier Sesé,2 Geetha Balakrishnan,3 and Zachary Fisk4 1Instituto de Ciencia de Materiales de Aragón and Departamento de Fı́sica de la Materia Condensada, CSIC–Universidad de Zaragoza, 50009-Zaragoza, Spain 2Instituto de Nanociencia de Aragón and Departamento de Fı́sica de la Materia Condensada, Universidad de Zaragoza, 50018-Zaragoza, Spain 3Department of Physics, Universi...