Exploring AdS-CFT Dualities in Dynamical Settings

Conference Date: 
Monday, June 4, 2012 (All day) to Friday, June 8, 2012 (All day)
Scientific Areas: 
Strong Gravity
Quantum Fields and Strings

This focused workshop will bring together researchers working in strongly gravitating/dynamical systems (numerical relativity and perturbative approaches) and AdS/CFT duality. The main objective of the program is to foster new interdisciplinary discourse and collaboration in this exciting new field connecting gauge and gravitational theories.

 

  • Enrico Barausse, University of Guelph
  • Alex Buchel, Perimeter Institute
  • Vitor Cardoso, Instituto Superior Tecnico
  • Miguel Costa, Universidade do Porto
  • Oscar Dias, CEA-Saclay
  • Roberto Emparan, Universitat de Barcelona
  • David Garfinkle, Oakland University
  • Lauren Greenspan, Universidad do Porto
  • Matt Johnson, Perimeter Institute
  • Pavel Kovtun, University of Victoria
  • Martin Kruczenski, Purdue University
  • Sung-Sik Lee, Perimeter Institute, McMaster University
  • Luis Lehner, Perimeter Institute, University of Guelph
  • Rob Leigh, Perimeter Institute
  • Aitor Lewkowycz, Perimeter Institute
  • Steven Liebling, Long Island University
  • David Mateos, Institucio Catalana de Recerca
  • Rob Myers, Perimeter Institute
  • Anton van Niekerk, Perimeter Institute
  • Miok Park, University of Waterloo
  • Marcelo Ponce, University of Guelph
  • Frans Pretorius, Princeton University
  • Jorge Santos, University of California, Santa Barbara
  • Masaru Shibata, Yukawa Institute for Theoretical Physics, Kyoto University
  • Jared Stang, University of British Columbia
  • Sean Stotyn, University of Waterloo
  • Ian Vega, University of Guelph
  • Pedro Vieira, Perimeter Institute
  • Barry Wardell, University College, Dublin
  • Toby Wiseman, Imperial College, London
  • Nicolas Yunes, University of Montana

 

Alex Buchel, Perimeter Institute
Quantum Quenches

Vitor Cardoso, Instituto Superior Tecnico
Black Hole Bombs
Superradiance in black hole physics is responsible for a chief number of interesting and spectacular effects. Here I will discuss some attempts at understanding the behavior of massive bosonic fields around rotating black holes, with focus on superradiance.

Miguel Costa, Universidade do Porto 
TBA

Oscar Dias, CEA-Saclay
Superradiance and Black Holes with a Single Killing Field 
It is well known that superradiance can extract energy from a black hole and, in an asymptotically global AdS background, it drives the black hole unstable. The onset of superradiance also signals a bifurcation to a new family of AdS black holes in a phase diagram of stationary solutions. We construct non-linearly the hairy black holes, solitons and boson stars associated to scalar superradiance. We present both charged and rotating solutions with scalar hair. In the charged case, the structure of phase diagram varies considerably, depending on the charge of the condensate. In the rotating case, the hairy solutions give the first examples of black holes with only a Killing field: the black holes are neither stationary nor axisymmetric, but are invariant under a single Killing field which is tangent to the null generators of the horizon. 
We discuss the role of these solutions in a full time evolution of the superradiant instability. We emphasize how scarce is our knowledge of the rotating superradiant instability endpoint, and that this instability will compete with the turbulent instability of AdS.

Roberto Emparan, Universitat de Barcelona
Black Strings and Liquid Jets
I will bring up for discussion some ideas on how the dynamics of black strings, and in particular the Gregory-Laflamme instability, can be related to the dynamics of liquid jets.

David Garfinkle, Oakland University
Asymptotically AdS Gravitational Collapse

Pavel Kovtun, University of Victoria
Relativistic Hydrodynamics and Fluctuations

Martin Kruczenski, Purdue University 
Shock Waves in Fluid/Gravity Duality
The AdS/CFT correspondence implies a duality between strongly coupled plasmas and black holes. In this talk I will review the basic ideas behind this relation and apply it to the case of shock waves propagating in the plasma. The dual description is in terms of waves on the horizon of black holes.   One result is that, for ultrarelativistic velocities (v ->1), the penetration depth L, or width of the shock, scales as L ~ (1-v^2)^(1/4). I will conclude by describing other possible ways to study the duality between fluids and black holes.

Sung-Sik Lee, Perimeter Institute, McMaster University 
TBA

Luis Lehner, Perimeter Institute, University of Guelph
Conformal Fluids and Turbulent Behaviour in 2+1 Dimensions

Rob Leigh, Perimeter Institute
A Survey of Holographic Condensed Matter and Fluids 

Steve Liebling, Long Island University 
Revisiting Scalar Collapase in Ads

David Mateos, Institucio Catalana de Recerca
Strong Coupling Isotropization Simplied
We study the isotropization of a homogeneous, strongly coupled, non-Abelian plasma by means of its gravity dual. We compare the time evolution of a large number of initially anisotropic states as determined, on the one hand, by the full non-linear Einstein's equations and, on the other, by the Einstein's equations linearized around the final equilibrium state. The linear approximation works remarkably well even for states that exhibit large anisotropies. For example, it predicts with a 20% accuracy the isotropization time, which is of order 1/T, with T the final equilibrium temperature. We comment on possible extensions to less symmetric situations.

Frans Pretorius, Princeton University
Numerical Evolution of 5D Asymptotically AdS Spacetimes
I will describe a new numerical effort to solve Einstein gravity in 5-dimensional asymptotically Anti de Sitter spacetimes (AdS). The motivation is the gauge/gravity duality of string theory, with application to scenarios that on the gravity side are described by dynamical, strong-field solutions. For example, it has been argued that certain properties of the quark-gluon plasma formed in heavy-ion collisions can be modeled by a conformal field theory, with the dual description on the gravity side provided by the collision of black holes. As a first step towards modeling such more general phenomena, we initially focus on spacetimes with SO(3) symmetry in the bulk; i.e., axisymmetric gravity, dual to states with spherical or special conformal symmetry on the boundary. For a first application we study quasi-normal ringdown of highly deformed black holes in the bulk. Even though the initial states are far from equilibrium, the boundary state is remarkably well described as a hydrodynamic flow from early times. The code is based on the generalized harmonic formulation of the field equations, and though this method has been shown to work well in many asymptotically flat scenarios, there are unique challenges that arise in obtaining regular, stable solutions in asymptotically AdS spacetimes. I will describe these challenges, and the way we have addressed them.

Jorge Santos, University of California, Santa Barbara
Gravitational Turbulent Instability of Anti-de Sitter Space

Masaru Shibata,Yukawa Institute for Theoretical Physics, Kyoto University
Instabilities of MP Black Holes

Jared Stang, University of British Columbia
Numerical Holographic Striped Phases

 Sean Stotyn, University of Waterloo
TBA

Toby Wiseman, Imperial College London 
Colloquium: Black Holes Beyond Astrophysics
In the context of the possible existence of large extra dimensions, and also the context of the AdS-CFT correspondence, there has been much interest in black holes solutions in theories of gravity and matter that are exotic - they might live in spacetime dimension other than 4, or have exotic matter and boundary conditions. I will review the types of physics that are accessible by studying such exotic black holes, ranging from LHC phenomenology to potential applications to condensed matter physics (via the AdS-CFT correspondence). One common theme is that traditional analytic methods
to find solutions tend not to work when confronted with these more exotic solutions and instead we are increasingly forced to use numerical techniques. I will discuss a numerical approach to finding static and stationary solutions, and give some example applications. I will also show how dynamical numerical simulations in these exotic contexts are playing an increasingly important role.

Toby Wiseman, Imperial College London
Conference Talk: Dynamics of AdS-CMT Quenches
I will describe numerical simulations of quenches in AdS-CMT superconductors where we are able to construct a dynamical phase diagram for the system. I will describe how the late time behaviour is
understood in terms of the quasinormal modes of the system, and how a rather generic behaviour of the pole structure there leads to interesting physical consequences that have an analog in condensed matter calculations using integrable models.

 

Friday Jun 08, 2012
Speaker(s): 

I will describe numerical simulations of quenches in AdS-CMT superconductors  where we are able to construct a dynamical phase diagram for the system. I will describe how the late time behaviour is
understood in terms of the quasinormal modes of the system, and how a rather generic behaviour of the pole structure there leads to interesting physical consequences that have an analog in condensed matter calculations using integrable models.

 

Thursday Jun 07, 2012
Speaker(s): 

Superradiance in black hole physics is responsible for a chief number of interesting and spectacular effects. Here I will discuss some attempts at understand the behavior of massive bosonic fields around rotating black holes, with focus on superradiance.

 

Wednesday Jun 06, 2012
Speaker(s): 

In the context of the possible existence of large extra dimensions, and also the context of the AdS-CFT correspondence, there has been much interest in black holes solutions in theories of gravity and matter that are exotic - they might live in spacetime dimension other than 4, or have exotic matter and boundary conditions. I will review the types of physics that are accessible by studying such exotic black holes, ranging from LHC phenomenology to potential applications to condensed matter physics (via the AdS-CFT correspondence). One common theme is that traditional analytic methods

 

Wednesday Jun 06, 2012
Speaker(s): 

Superradiance in black hole physics is responsible for a chief number of
interesting and spectacular effects. Here I will discuss some attempts
at understanding the behavior of massive bosonic fields around rotating
black holes, with focus on superradiance.

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