Triangle Seminars
Tuesday, 4 Dec 2007
Generalized Renewal Process and Imperfect Repair
Maxim Finkelstein
(University of the FreeState, Bloemfontein, South Africa)
Superstatistics: Theory and Applications
Christian Beck
(Queen Mary)
Wednesday, 5 Dec 2007
New Connections between Topological String Theory and Matrix Models
Albrecht Klemm
(Univ. of Bonn)
Abstract:
We explain the relation between the holomorphic anomaly equations in topological string theory and the loop equations in matrix models. We explain a strategy for their solutions using modular forms, which applies to open and closed topological string theory on (non) compact Calabi-Yau manifolds. (A description how to find Lecture Theatre 1 is given on http://brahms.mth.kcl.ac.uk/cgi-bin/main.pl?action=triangle)
We explain the relation between the holomorphic anomaly equations in topological string theory and the loop equations in matrix models. We explain a strategy for their solutions using modular forms, which applies to open and closed topological string theory on (non) compact Calabi-Yau manifolds. (A description how to find Lecture Theatre 1 is given on http://brahms.mth.kcl.ac.uk/cgi-bin/main.pl?action=triangle)
Posted by: KCL
Wrapping interactions in gauge theory and finite size effects in string theory
Romuald Janik
(Jagellonian University)
Abstract:
Anomalous dimensions of long operators in SYM are described by the asymptotic Bethe ansatz. There exist, in addition, finite size effects due to wrapping interactions. In this talk I would like to argue that within the AdS/CFT correspondence these additional wrapping interactions
are described by finite size corrections in the relevant integrable quantum field theory and analyze the finite size corrections to the giant magnon.
Anomalous dimensions of long operators in SYM are described by the asymptotic Bethe ansatz. There exist, in addition, finite size effects due to wrapping interactions. In this talk I would like to argue that within the AdS/CFT correspondence these additional wrapping interactions
are described by finite size corrections in the relevant integrable quantum field theory and analyze the finite size corrections to the giant magnon.
Posted by: KCL
Thursday, 6 Dec 2007
Infinite-Dimensional Symmetries of Two-Dimensional Coset Models Coupled to Gravity
Christopher Pope
(Texas A and M University)
Abstract:
The global symmetry groups that result from compactifying eleven-dimensional supergravity on an n-dimensional torus play a central role in our understanding of U-dualities in string and M-theory. The mechanism leading to the En Lie algebra upon compactification on Tn is well-known for n less than 9, but the situation for n=9, corresponding to the compactification to 2 dimensions, has been described much less clearly in the literature. We give an elementary, and completely explicit, description of the infinite-dimensional symmetries of all symmetric-space coset models in 2-dimensional gravitational backgrounds, including symmetries of both Kac-Moody and Virasoro type.
The global symmetry groups that result from compactifying eleven-dimensional supergravity on an n-dimensional torus play a central role in our understanding of U-dualities in string and M-theory. The mechanism leading to the En Lie algebra upon compactification on Tn is well-known for n less than 9, but the situation for n=9, corresponding to the compactification to 2 dimensions, has been described much less clearly in the literature. We give an elementary, and completely explicit, description of the infinite-dimensional symmetries of all symmetric-space coset models in 2-dimensional gravitational backgrounds, including symmetries of both Kac-Moody and Virasoro type.
Posted by: IC