Triangle Seminars
Wednesday, 16 Nov 2011
Minimal Model Holography
📍 London
Matthias Gaberdiel
(ETH Zürich)
Spin Chains and Holography at the Veneziano limit
📍 London
Elli Pomoni
(Humboldt)
Abstract:
N = 2 SuperConformal QCD is perhaps the simplest theory outside the N = 4 "universality class" that we can attempt to study holographically. It is moreover continuously connected to the N = 4 class by an interpolating family of N = 2 SCFT. Careful analysis of its chiral spectrum points towards a gravity dual description via a non-critical string background. We then turn to the study of spin chains. The complete one-loop Hamiltonian and some higher-loop results already reveal a rich dynamics. We present past results and current progress.
N = 2 SuperConformal QCD is perhaps the simplest theory outside the N = 4 "universality class" that we can attempt to study holographically. It is moreover continuously connected to the N = 4 class by an interpolating family of N = 2 SCFT. Careful analysis of its chiral spectrum points towards a gravity dual description via a non-critical string background. We then turn to the study of spin chains. The complete one-loop Hamiltonian and some higher-loop results already reveal a rich dynamics. We present past results and current progress.
Posted by: KCL
Thursday, 17 Nov 2011
ABJM theory as a Fermi gas
pavel putrov
(geneva university)
Abstract:
The partition function on the three-sphere of many
supersymmetric Chern-Simons-matter theories reduces, by localization, to a matrix model.
In this talk I will describe a new method to study
these models in the M-theory limit, but at all orders in the 1/N expansion. The method is based on reformulating the matrix model as the partition function of a Fermi gas. This new approach leads to a completely elementary derivation of the N^{3/2} behavior for ABJM theory and other quiver Chern-Simons-matter theories. In addition, the full series of 1/N corrections to the original matrix integral can be
simply determined by a next-to-leading calculation in the semiclassical expansion of the quantum gas.
The partition function on the three-sphere of many
supersymmetric Chern-Simons-matter theories reduces, by localization, to a matrix model.
In this talk I will describe a new method to study
these models in the M-theory limit, but at all orders in the 1/N expansion. The method is based on reformulating the matrix model as the partition function of a Fermi gas. This new approach leads to a completely elementary derivation of the N^{3/2} behavior for ABJM theory and other quiver Chern-Simons-matter theories. In addition, the full series of 1/N corrections to the original matrix integral can be
simply determined by a next-to-leading calculation in the semiclassical expansion of the quantum gas.
Posted by: QMW