Conveners
T2-4 Fields and Strings (DTP) / Champs et cordes (DPT)
- Rainer Dick (University of Saskatchewan)
Prof.
Jean-Francois Fortin
(Laval University)
6/16/15, 1:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
The behavior of coupling constants in quantum field theory under a change of energy scale is encoded in the renormalization group. At fixed points of the renormalization group flow, quantum field theories exhibit conformal invariance and are described as conformal field theories. The larger spacetime symmetry of conformal field theory is not the smallest possible extension of Poincare...
Andrew Frey
(University of Winnipeg)
6/16/15, 2:15 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Gravitational collapse in asymptotically anti-de Sitter spacetime is dual to thermalization of energy injected to the ground state of a strongly coupled gauge theory. Following work by Bizon and Rostworowski, numerical studies of massless scalar fields in Einstein gravity indicate that generic initial states thermalize, given time, even for arbitrarily small energies. From the gravitational...
Joel Hutchinson
(University of Alberta)
6/16/15, 2:45 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We apply the AdS/CFT correspondence to study a quantum Hall system at strong coupling. Fermions at finite density in an external magnetic field are put in via gauge fields living on a stack of D5 branes in Anti-deSitter space. Under the appropriate conditions, the D5 branes blow up to form a D7 brane which is capable of forming a charge-gapped state. We add finite temperature by including a...
ChunJun Cao
(Caltech)
6/16/15, 3:00 PM
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
It has been proposed that the Multi-scale Entanglement Renormalization Ansatz (MERA), which is efficient at reproducing CFT ground states, also captures certain aspects of the AdS/CFT correspondence. In particular, MERA reproduces the Ryu-Takayanagi-type formula and the network structure is similar to a discretized AdS space where the renormalization direction gives rise to the additional bulk...
