Universality of second order transport coefficients from the gauge-string duality
نویسندگان
چکیده
We consider the strongly coupled limit of conformal gauge theory plasmas with conserved U(1) charges which have a gravity dual. We show that, under mild restrictions, the second order transport coefficients of such theories satisfy a universal relation among themselves, similar to the shear viscosity to entropy ratio. November 2008 e-mail: [email protected] e-mail: [email protected]
منابع مشابه
DEVELOPMENT IN STRING THEORY
The string theory is a fast moving subject, both physics wise and in the respect of mathematics. In order to keep up with the discipline it is important to move with new ideas which are being stressed. Here I wish to give extracts from new papers of ideas which I have recently found interesting. There are six papers which are involved: I ."Strings formulated directly in 4 dimensions " A. N...
متن کاملThe confining string beyond the free-string approximation in the gauge dual of percolation
We simulate five different systems belonging to the universality class of the gauge dual of three-dimensional random percolation to study the underlying effective string theory at finite temperature. All the data for the finite temperature string tension, when expressed by means of adimensional variables, are nicely described by a unique scaling function. We calculate the first few terms of the...
متن کاملبررسی حرکت براونی یک ذره سنگین با استفاده از تناظر AdS/CFT
In this research we have studied the Brownian motion of a heavy particle in thermalized plasma. This plasma is made of quarks and gluons and it is different with normal plasma. Since, coupling constant is strong in this plasma, usual perturbation method does not work for the study of this plasma. For this purpose AdS/CFT duality is used. Based on the AdS/CFT duality to consider temperature...
متن کاملUniversality of non-equilibrium dynamics of CFTs from holography
Motivated by a low-energy effective description of gauge theory/string theory duality, we conjecture that the dynamics of SO(4)-invariant states in a large class of four-dimensional conformal gauge theories on S with non-equal central charges c 6= a are universal on time scales tuniversal ∝ c (E − Evacuum) , in the limit where the energy E → Evacuum. We show that lowenergy excitations in c 6= a...
متن کاملUniversality of the diffusion wake in the gauge-string duality
As a particle moves through a fluid, it may generate a laminar wake behind it. In the gauge-string duality, we show that such a diffusion wake is created by a heavy quark moving through a thermal plasma and that it has a universal strength when compared to the total drag force exerted on the quark by the plasma. The universality extends over all asymptotically anti-de Sitter supergravity constr...
متن کامل