2015 CAP Congress / Congrès de l'ACP 2015

Session

T2-4 Fields and Strings (DTP) / Champs et cordes (DPT)

T2-4

16 Jun 2015, 13:45

University of Alberta

Conveners

T2-4 Fields and Strings (DTP) / Champs et cordes (DPT)

• Rainer Dick (University of Saskatchewan)

519. Scale and Conformal Invariance in Quantum Field Theory

Prof. Jean-Francois Fortin (Laval University)

16/06/2015, 13:45

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...

535. Dynamics of Gravitational Collapse in AdS Space-Time

Andrew Frey (University of Winnipeg)

16/06/2015, 14:15

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...

632. Thermodynamic and Transport Properties of a Holographic Quantum Hall System

Joel Hutchinson (University of Alberta)

16/06/2015, 14:45

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...

634. Constraints and Bulk Physics in the AdS/MERA Correspondence

ChunJun Cao (Caltech)

16/06/2015, 15:00

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...