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Gauge theory - gravity duality predicts that the shear viscosity of N=4 supersymmetric SU(N_c) Yang-Mills plasma at temperature T in the limit of large N_c and large 't Hooft coupling g^2_{YM} N_c is independent of the coupling and equals…

High Energy Physics - Theory · Physics 2008-11-26 Alex Buchel , James T. Liu , Andrei O. Starinets

We compute finite coupling correction to a nonlinear second order hydrodynamic coefficient in the boost invariant expansion of the N=4 supersymmetric Yang-Mills plasma. The result is universal for a large class of strongly coupled four…

High Energy Physics - Theory · Physics 2009-01-14 Alex Buchel , Miguel Paulos

Using the anti-de Sitter/conformal field theory correspondence, we relate the shear viscosity \eta of the finite-temperature N=4 supersymmetric Yang-Mills theory in the large N, strong-coupling regime with the absorption cross section of…

High Energy Physics - Theory · Physics 2010-02-18 G. Policastro , D. T. Son , A. O. Starinets

The ratio of shear viscosity to entropy density in a strongly coupled CFT plasma can be computed using the AdS/CFT correspondence either from equilibrium correlation functions or from the Janik-Peschanski dual of the boost invariant plasma…

High Energy Physics - Theory · Physics 2008-11-26 Alex Buchel

By taking into account the full order(\alpha'^3) type IIB string theory corrections to the supergravity action, we compute the leading finite 't Hooft coupling order(\lambda^{-3/2}) corrections to the conductivity of strongly-coupled SU(N)…

High Energy Physics - Theory · Physics 2015-05-30 Babiker Hassanain , Martin Schvellinger

We present evidence for the universality of the shear viscosity of conformal gauge theory plasmas beyond infinite coupling. We comment of subtleties of computing the shear viscosity in effective models of gauge/gravity correspondence rather…

High Energy Physics - Theory · Physics 2008-11-26 Alex Buchel

We compute finite 't Hooft coupling corrections to observables related to charged quantities in a strongly coupled $\mathcal{N}=4$ supersymmetric Yang-Mills plasma. The coupling corrected equations of motion of gauge fields are explicitly…

High Energy Physics - Theory · Physics 2018-08-01 Sebastian Waeber , Andreas Schäfer

We compute the shear viscosity of the non-commutative N=4 super Yang-Mills quantum field theory at strong coupling using the dual supergravity background. Special interest derives from the fact that the background presents an intrinsic…

High Energy Physics - Theory · Physics 2009-04-17 Karl Landsteiner , Javier Mas

Finite 't Hooft coupling corrections to multiple physical observables in strongly coupled $N=4$ supersymmetric Yang-Mills plasma are examined, in an attempt to assess the stability of the expansion in inverse powers of the 't Hooft coupling…

High Energy Physics - Theory · Physics 2016-01-20 Sebastian Waeber , Andreas Schaefer , Aleksi Vuorinen , Laurence G. Yaffe

Gauge theory-string theory duality describes strongly coupled N=4 supersymmetric SU(n) Yang-Mills theory at finite temperature in terms of near extremal black 3-brane geometry in type IIB string theory. We use this correspondence to compute…

High Energy Physics - Theory · Physics 2016-09-06 Paolo Benincasa , Alex Buchel

We investigate the shear viscosity $\eta$ and the entropy density $s$ of strongly coupled $\mathcal{N}=4$ super Yang-Mills (SYM) plasma in late time of hydrodynamic evolution with AdS/CFT duality and Bjorken scaling. We use correlation…

High Energy Physics - Phenomenology · Physics 2011-04-07 Shi Pu , Qun Wang

Prior attempts to construct the gravity dual of boost-invariant flow of N=4 supersymmetric Yang-Mills gauge theory plasma suffered from apparent curvature singularities in the late time expansion. This Letter shows how these problems can be…

High Energy Physics - Theory · Physics 2009-02-26 Michal P. Heller , R. Loganayagam , Michal Spalinski , Piotr Surowka , Samuel E. Vazquez

We consider corrections to the ratio of the shear viscosity to the entropy density in strongly coupled nonabelian plasmas using the AdS/CFT correspondence. In particular, higher derivative terms with the five-form RR flux, which have been…

High Energy Physics - Theory · Physics 2009-02-20 Robert C. Myers , Miguel F. Paulos , Aninda Sinha

We calculate the shear viscosity to entropy density ratio in pure SU(N) Yang-Mills theory below the critical temperature using the strong coupling expansion. The result for the eta/s ratio for temperatures around the phase transition is…

High Energy Physics - Theory · Physics 2008-12-05 Antal Jakovac , Daniel Nogradi

We study string theory duals of the expanding boost invariant conformal gauge theory plasmas at strong coupling. The dual supergravity background is constructed as an asymptotic late-time expansion, corresponding to equilibration of the…

High Energy Physics - Theory · Physics 2008-11-26 Alex Buchel

We study string theory duals of the expanding boost invariant conformal gauge theory plasmas at strong coupling. The dual supergravity background is constructed as an asymptotic late-time expansion, corresponding to equilibration of the…

High Energy Physics - Theory · Physics 2008-11-26 Paolo Benincasa , Alex Buchel , Michal P. Heller , Romuald A. Janik

Shear viscosity is evaluated within a model of the gluon plasma, which is based entirely on the stochastic nonperturbative fields. We consider two types of excitations of such fields, which are characterized by the thermal correlation…

High Energy Physics - Phenomenology · Physics 2012-02-13 Dmitri Antonov

We consider strongly coupled gauge theory plasma with conserved global charges that allow for a dual gravitational description. We study the shear viscosity of the gauge theory plasma in the presence of chemical potentials for these…

High Energy Physics - Theory · Physics 2008-11-26 Paolo Benincasa , Alex Buchel , Roman Naryshkin

Using the AdS/CFT correspondence, we compute analytically the late-time behavior of two-point functions, Wilson loops and entanglement entropy in a strongly coupled $\mathcal{N}=4$ super-Yang-Mills plasma undergoing a boost-invariant…

High Energy Physics - Theory · Physics 2017-07-28 Juan F. Pedraza

The shear viscosity of the quark-gluon plasma is predicted to be lower than the collisional viscosity for weak coupling. The estimated ratio of the shear viscosity to entropy density is rather close to the ratio calculated by N = 4 super…

Nuclear Theory · Physics 2014-03-19 Juhee Hong , P. H. Diamond
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