Name: Conference on Integrability in Gauge and String Theory 2010
Start: 2010-06-28T08:00:00+02:00
End: 2010-07-02T18:00:00+02:00
Location: Nordita

Conference on Integrability in Gauge and String Theory 2010

from Monday, June 28, 2010 (8:00 AM) to Friday, July 2, 2010 (6:00 PM)

Monday, June 28, 2010

9:00 AM Registration
Registration
9:00 AM - 9:55 AM
Room: Main entrance
9:55 AM Welcome - Lárus Thorlacius (Nordita)
Welcome
- Lárus Thorlacius (Nordita)
9:55 AM - 10:00 AM
Room: Oskar Klein lecture hall
10:00 AM Integrability of high energy scattering amplitudes in N=4 SUSY - Lev Lipatov (Petersburg Nuclear Physics Institute)
Integrability of high energy scattering amplitudes in N=4 SUSY
- Lev Lipatov (Petersburg Nuclear Physics Institute)
10:00 AM - 11:00 AM
Room: Oskar Klein lecture hall
11:00 AM break
break
11:00 AM - 11:30 AM
Room: Oskar Klein lecture hall
11:30 AM Quantum integrable spin systems and generalized Schur - Weyl duality - Petr Kulish (St. Petersburg Department of Steklov Mathematical Institute)
Quantum integrable spin systems and generalized Schur - Weyl duality
- Petr Kulish (St. Petersburg Department of Steklov Mathematical Institute)
11:30 AM - 12:30 PM
Room: Oskar Klein lecture hall There are integrable (solvable) spin systems related to quantum groups (quasi-triangular Hopf algebras), with simple structure of space of states. The integrals of motion belong to a quotient A of the braid group, which is a centralizer of the symmetry quantum group of the system. The space of states is a direct sum of of tensor products of corresponding irreducible representations of A and the quantum group. This decomposition is multiplicity free.
12:30 PM lunch
lunch
12:30 PM - 2:30 PM
Room: -
2:30 PM One-point functions for sine-Gordon model at finite temperature. - Fedor Smirnov (LPTHE, Paris)
One-point functions for sine-Gordon model at finite temperature.
- Fedor Smirnov (LPTHE, Paris)
2:30 PM - 3:30 PM
Room: Oskar Klein lecture hall We apply the hidden fermionic structure of integrable models for computing the one-point functions of the primary fields and their descendants for Eucildean sine-Gordon model on the cylinder (at finite temperature). This allows in principle to write down the complete asymptotic series for the two-point functions.
3:30 PM Non-planarity and Integrability - Charlotte Kristjansen (Niels Bohr Institutet, Copenhagen)
Non-planarity and Integrability
- Charlotte Kristjansen (Niels Bohr Institutet, Copenhagen)
3:30 PM - 4:30 PM
Room: Oskar Klein lecture hall
4:30 PM break
break
4:30 PM - 5:00 PM
Room: Oskar Klein lecture hall
5:00 PM Q-Operator Demystified - Matthias Staudacher (Humboldt Universität zu Berlin)
Q-Operator Demystified
- Matthias Staudacher (Humboldt Universität zu Berlin)
5:00 PM - 6:00 PM
Room: Oskar Klein lecture hall I will present a novel construction of the Q-operator for systems with sl(n|m) symmetry.
6:30 PM Reception
Reception
6:30 PM - 9:30 PM
Room: Canteen
Tuesday, June 29, 2010
10:00 AM The worldsheet low-energy limit of the AdS_4 x CP^3 superstring - Dmitry BYKOV
The worldsheet low-energy limit of the AdS_4 x CP^3 superstring
- Dmitry BYKOV
10:00 AM - 11:00 AM
Room: Oskar Klein lecture hall
11:00 AM break
break
11:00 AM - 11:30 AM
Room: Oskar Klein lecture hall
11:30 AM Why Y? Exploiting Hirota integrable dynamics in AdS/CFT - Vladimir KAZAKOV
Why Y? Exploiting Hirota integrable dynamics in AdS/CFT
- Vladimir KAZAKOV
11:30 AM - 12:30 PM
Room: Oskar Klein lecture hall
12:30 PM lunch
lunch
12:30 PM - 2:30 PM
Room: -
2:30 PM TBA and functional relations for the AdS_5/CFT_4 correspondence - Roberto Tateo (universita` di Torino)
TBA and functional relations for the AdS_5/CFT_4 correspondence
- Roberto Tateo (universita` di Torino)
2:30 PM - 3:30 PM
Room: Oskar Klein lecture hall The exact anomalous dimensions of the single trace composite operators in the planar limit of $N=4$ super Yang-Mills can be studied in the framework of the Thermodynamic Bethe Ansatz method (TBA). In this talk, I will discuss the analytic properties of the TBA solutions -the Y-functions- and the associated set of functional relations -the Y-system-. Contrary to the more studied relativistic invariant cases, the $AdS_5/CFT_4$-related Y-functions live on multi-sheeted coverings of the complex plane with an infinite number of square-root branch points. As a direct consequence of this fact, the TBA equations and in particular the dressing kernel cannot be obtained from the Y-system without extra information on the square-root discontinuities across semi-infinite segments in the complex plane. It is shown that the discontinuity functions fulfill an independent simple set of local functional equations. The Y-system extended by the discontinuity relations forms a fundamental set of local non-linear constraints that can be easily transformed into integral form through Cauchy's theorem.
3:30 PM On the Mirror TBA - Gleb Arutyunov (Universiteit Utrecht)
On the Mirror TBA
- Gleb Arutyunov (Universiteit Utrecht)
3:30 PM - 4:30 PM
Room: Oskar Klein lecture hall I will discuss some subtleties of the Thermodynamic Bethe Ansatz for the AdS_5 x S^5 mirror model concerning the construction of excited states and their analytic properties. I will then use the TBA equations to derive the five-loop anomalous dimension of the Konishi operator and argue that the corresponding result agrees with the one obtained via the generalized Luscher formulae.
4:30 PM break
break
4:30 PM - 5:00 PM
Room: Oskar Klein lecture hall
5:00 PM The classical R-matrix of AdS/CFT - Benoit Vicedo (Saclay)
The classical R-matrix of AdS/CFT
- Benoit Vicedo (Saclay)
5:00 PM - 6:00 PM
Room: Oskar Klein lecture hall After reviewing the R-matrix approach to classical integrable systems, we formulate the classical integrable structure of sigma-models relevant to the AdS/CFT correspondence.
Wednesday, June 30, 2010
10:00 AM Quantum Deformations of Worldsheet Scattering - Niklas Beisert (AEI, Potsdam)
Quantum Deformations of Worldsheet Scattering
- Niklas Beisert (AEI, Potsdam)
10:00 AM - 11:00 AM
Room: Oskar Klein lecture hall
11:00 AM break
break
11:00 AM - 11:30 AM
Room: Oskar Klein lecture hall
11:30 AM Spin Chains for N=2 Superconformal Theories: Integrability in the Veneziano Limit? - Leonardo Rastelli (Stony Brook University)
Spin Chains for N=2 Superconformal Theories: Integrability in the Veneziano Limit?
- Leonardo Rastelli (Stony Brook University)
11:30 AM - 12:30 PM
Room: Oskar Klein lecture hall
12:30 PM lunch
lunch
12:30 PM - 2:30 PM
Room: -
2:30 PM An operator product expansion for null polygonal Wilson loops - Juan Maldacena (IAS Princeton)
An operator product expansion for null polygonal Wilson loops
- Juan Maldacena (IAS Princeton)
2:30 PM - 3:30 PM
Room: Oskar Klein lecture hall We consider polygonal Wilson loops with null edges in conformal gauge theories. We derive an OPE-like expansion when several successive lines of the polygon are becoming aligned. The limit corresponds to a collinear, or multicollinear, limit and we explain the systematics of all the subleading corrections, going beyond the leading terms that were previously considered. These subleading corrections are governed by excitations of high spin operators, or excitations of a flux tube that goes between two Wilson lines. The discussion is valid for any conformal gauge theory, for any coupling and in any dimension. For N=4 super Yang Mills we check this expansion at strong coupling and at two loops at weak coupling . We also make predictions for the remainder function at higher loops. We will also discuss aspects of the excitations around the relevant flux tube or "sea of derivatives''
3:30 PM A & B model approaches to surface operators and Toda theories - Niclas Wyllard
A & B model approaches to surface operators and Toda theories
- Niclas Wyllard
3:30 PM - 4:30 PM
Room: Oskar Klein lecture hall In the first part I will give an overview of the recent results relating 4d N=2 quiver gauge theories, 2d conformal Toda field theories, topological string theories and quiver matrix models. In the second part surface operators in the gauge theories and their dual interpretations in the other classes of theories will be discussed
4:30 PM break
break
4:30 PM - 5:00 PM
Room: Oskar Klein lecture hall
5:00 PM Yangians and Grassmannians in N=4 super Yang-Mills - Livia Ferro (LAPTH Annecy)
Yangians and Grassmannians in N=4 super Yang-Mills
- Livia Ferro (LAPTH Annecy)
5:00 PM - 6:00 PM
Room: Oskar Klein lecture hall
Thursday, July 1, 2010
10:00 AM Perturbative quantum gravity from gauge theory - Henrik Johansson (Saclay)
Perturbative quantum gravity from gauge theory
- Henrik Johansson (Saclay)
10:00 AM - 11:00 AM
Room: Oskar Klein lecture hall In recent years it has become clear that gauge theory and gravity amplitudes exhibit remarkable simplicity and beautiful structures. Here I will discuss one such structure: a duality between color and kinematics in gauge theory amplitudes. The duality implies nontrivial relations between color-ordered partial tree amplitudes. Remarkably the duality dictates the construction of gravity amplitudes as a double copy of gauge theory kinematic factors, clarifying the Kawai-Lewellen-Tye relations of open and closed strings. Originally considered as a classical (tree-level) duality, here I will present evidence that the duality is valid at the quantum level as well.
11:00 AM break
break
11:00 AM - 11:30 AM
Room: Oskar Klein lecture hall
11:30 AM Scattering amplitudes on the Coulomb branch of N=4 super Yang-Mills - Johannes Henn (Humboldt Universität zu Berlin)
Scattering amplitudes on the Coulomb branch of N=4 super Yang-Mills
- Johannes Henn (Humboldt Universität zu Berlin)
11:30 AM - 12:30 PM
Room: Oskar Klein lecture hall
12:30 PM lunch
lunch
12:30 PM - 2:30 PM
Room: -
2:30 PM Classical Polylogarithms for Amplitudes and Wilson Loops - Marcus Spradlin (Brown University)
Classical Polylogarithms for Amplitudes and Wilson Loops
- Marcus Spradlin (Brown University)
2:30 PM - 3:30 PM
Room: Oskar Klein lecture hall
3:30 PM The Y-system for scattering amplitudes - Pedro Vieira (Perimeter Institute)
The Y-system for scattering amplitudes
- Pedro Vieira (Perimeter Institute)
3:30 PM - 4:30 PM
Room: Oskar Klein lecture hall We compute N=4 Super Yang Mills planar amplitudes at strong coupling by considering minimal surfaces in AdS_5 space. The surfaces end on a null polygonal contour at the boundary of AdS. We show how to compute the area of the surfaces as a function of the conformal cross ratios characterizing the polygon at the boundary. These equations have the form of Thermodynamic Bethe Ansatz equations. The area is the free energy of the TBA system. We consider any number of gluons and in any kinematic configuration.
4:30 PM break
break
4:30 PM - 5:00 PM
Room: Oskar Klein lecture hall
5:00 PM Superconformal invariance of scattering amplitudes in N=4 super-Yang-Mills theory - Emery Sokatchev (LAPTH, Annecy)
Superconformal invariance of scattering amplitudes in N=4 super-Yang-Mills theory
- Emery Sokatchev (LAPTH, Annecy)
5:00 PM - 6:00 PM
Room: Oskar Klein lecture hall We discuss the realization of dual and conventional superconformal symmetries on the scattering amplitudes in N=4 SYM. While these symmetries are exact at tree level, they have to be complemented with analytic properties to fully fix the tree. At loop level both symmetries are broken by different mechanisms. We describe the formulation of amplitudes in twistor space and in terms of Grassmannian invariants.
6:00 PM dinner
dinner
6:00 PM - 11:00 PM
Room: -
Friday, July 2, 2010
9:30 AM 5-loop test of the AdS/CFT spectral equations - Tomasz Łukowski (Uniwersytet Jagielloński, Kraków)
5-loop test of the AdS/CFT spectral equations
- Tomasz Łukowski (Uniwersytet Jagielloński, Kraków)
9:30 AM - 10:30 AM
Room: Oskar Klein lecture hall I will review the computation of the anomalous dimension for twist-2 operators at five loop order at weak coupling. This result provides us with data for testing the veracity of the spectral equations for planar AdS/CFT.
10:30 AM Weak coupling tests of the mirror TBA - Arpad Hegedus (KFKI, Budapest)
Weak coupling tests of the mirror TBA
- Arpad Hegedus (KFKI, Budapest)
10:30 AM - 11:30 AM
Room: Oskar Klein lecture hall The mirror Thermodynamic Bethe Ansatz (TBA) approach offers a tool to investigate the spectrum of AdS/CFT in the planar limit. The TBA equations governing the spectrum are based on several conjectures this is why it is important to test them carefully. In this talk we will focus on the analytical tests of the AdS/CFT TBA system in the weak coupling limit and show that the 5-loop anomalous dimensions of the twist-2 operators of the sl(2) sector derived from the TBA equations agree with the results obtained previously from the generalized Luscher formulae.
11:30 AM break
break
11:30 AM - 12:00 PM
Room: Oskar Klein lecture hall
12:00 PM Correlation functions of operators dual to classical string states - Romuald Janik (Uniwersytet Jagielloński, Kraków)
Correlation functions of operators dual to classical string states
- Romuald Janik (Uniwersytet Jagielloński, Kraków)
12:00 PM - 1:00 PM
Room: Oskar Klein lecture hall
1:00 PM lunch
lunch
1:00 PM - 2:15 PM
Room: -
2:15 PM Strings in the AdS light-cone gauge and the generalized scaling function - Radu Roiban (Pennsylvania State University)
Strings in the AdS light-cone gauge and the generalized scaling function
- Radu Roiban (Pennsylvania State University)
2:15 PM - 3:15 PM
Room: Oskar Klein lecture hall
3:15 PM Summary talk - Arkady Tseytlin (Imperial College London)
Summary talk
- Arkady Tseytlin (Imperial College London)
3:15 PM - 4:00 PM
Room: Oskar Klein lecture hall