Quantum Gravity Colloquium 5

6 Oct 2010, 10:00 → 8 Oct 2010, 19:00 Europe/Zurich

454A - Klee, 4th floor (Thursday morning: 646A - Mondrian, 6th floor) (Laboratoire APC, University Paris 7)

A colloquium to facilitate discussion and exchange between the PhD students in the area of Quantum Gravity.

The primary purpose of this colloquia is to provide a framework for PhD students in Quantum Gravity and related areas to present their own work, and facilitate discussion outside the scope of ones own project.

Wednesday 6 October

10:15 Introductory remarks

1 Constrained BF theory as gravity

2 The fate of diffeomorphism symmetries in discrete gravity

11:30 Morning coffee break

3 Quantized cosmological constant in 1+1 dimensional quantum gravity

4 Fock space in group field theory

13:00 Lunch break

5 Tensorial spectrum with LQC corrections, a possible way to test the theory

6 Stable coherent states

15:30 Afternoon coffee break

7 Group field theory and EPR/FK models

Thursday 7 October

8 Emergence of non-commutativity in an operational description of spacetime

9 Causal dynamical triangulations with a point-like source

11:30 Morning coffee break

10 Physical boundary Hilbert space and volume operator in the EPRL spin-foam theory

11 An effective approach to the problem of time

13:00 Lunch break

12 A basic introduction to the MacDowell-Mansouri gravity of the BF type versus LQG

13 Could ultra-light quantum black holes compose dark matter or emergent speed of light?

15:30 Afternoon coffee break

14 Research directions between loops and strings

15 Unimodular loop quantum gravity

Friday 8 October

16 Spin foam models and group field theory

11:45 Morning coffee break

17 Spin foam models and group field theory

13:00 Lunch break

Workgroup

15:30 Afternoon coffee break

Workgroup

17:30 Break

17:45 Collective discussion