Triangle Seminars
Monday, 31 Mar 2014
Matrix Dynamics and Black Holes
David Berenstein
(UCSB)
Tuesday, 1 Apr 2014
T-duality and scattering of stringy states
Jnanadeva Maharana
(Institute of Physics, Bhubaneswar (visiting Prof at IC))
Abstract:
A brief review will recapitulate some of the essential features of T-duality symmetry in string theory. A proposal will be presented to show how a scattering amplitude of some string excitations could be related to another amplitude by T-duality transformation for a class of stringy states. This is considered in a simple scenario. Some illustrative examples will be presented as application of the proposal.
A brief review will recapitulate some of the essential features of T-duality symmetry in string theory. A proposal will be presented to show how a scattering amplitude of some string excitations could be related to another amplitude by T-duality transformation for a class of stringy states. This is considered in a simple scenario. Some illustrative examples will be presented as application of the proposal.
Posted by: IC
Wednesday, 2 Apr 2014
Scale vs conformal invariance in four dimensions
Kostas Skenderis
(STAG, Southampton U.)
Abstract:
I will discuss the question of whether four dimensional scale invariant unitary quantum field theories are actually conformally invariant.
I will present a complete analysis of possible scale anomalies in correlation functions of the trace of the stress-energy tensor in such theories and discuss recent attempts to show that scale invariance implies conformal invariance.
I will discuss the question of whether four dimensional scale invariant unitary quantum field theories are actually conformally invariant.
I will present a complete analysis of possible scale anomalies in correlation functions of the trace of the stress-energy tensor in such theories and discuss recent attempts to show that scale invariance implies conformal invariance.
Posted by: IC
New Insight into CFTs from the Bootstrap Mechanism
Ferdinando Gliozzi
(INFN, Torino)
Abstract:
I describe a general method implementing the crossing symmetry constraints in a large class of CFTs. Starting with
the knowledge of the fusion rules of scalar operators,
this method can generate systematically the scaling dimensions of the
low-lying primaries of the theory. Its application to the Yang -Lee
edge singularity for \(2\le D \le 6\) and to the 3d critical Ising model
gives rather accurate results and allows to estimate several new critical
exponents
I describe a general method implementing the crossing symmetry constraints in a large class of CFTs. Starting with
the knowledge of the fusion rules of scalar operators,
this method can generate systematically the scaling dimensions of the
low-lying primaries of the theory. Its application to the Yang -Lee
edge singularity for \(2\le D \le 6\) and to the 3d critical Ising model
gives rather accurate results and allows to estimate several new critical
exponents
Posted by: QMW
Thursday, 3 Apr 2014
The topology of giant gravitons from meromorphic functions
Andrea Prinsloo
(Surrey U.)
Abstract:
I will present a systematic study of the topology of Mikhailov's quarter and eighth-BPS giant gravitons in AdS_5 x S^5. These D3-branes are rigidly rotating 3-manifolds embedded into the 5-sphere compact space, which are dual to long, gauge-invariant, quarter and eighth-BPS operators in N=4 SYM theory by the AdS/CFT correspondence. How the topology is encoded in these operators remains an open question.
I will present a systematic study of the topology of Mikhailov's quarter and eighth-BPS giant gravitons in AdS_5 x S^5. These D3-branes are rigidly rotating 3-manifolds embedded into the 5-sphere compact space, which are dual to long, gauge-invariant, quarter and eighth-BPS operators in N=4 SYM theory by the AdS/CFT correspondence. How the topology is encoded in these operators remains an open question.
Posted by: QMW