Conveners
(DTP) W2-5 Hot Topics in Theoretical Physics : Quantum Gravity and Information | Sujets d'actualité en physique théorique :Gravité quantique et information (DPT)
- Sharon Morsink (University of Alberta)
Description
Hot Topics in Theoretical Physics (DTP) – This year the DTP symposium will address on aspects of gravitational physics. In the first part we will focus on exciting advances in observation (electromagnetic, gravitational wave and processing ability) that have happened in the last decade and what theory is doing to address them. In the second we will we focus on the fundamental and perennial problem of quantum gravity.
We describe how the holographic approach to quantum gravity might be used to give a full-fledged quantum gravity description of big-bang cosmology. The resulting cosmological models have a negative cosmological constant but can generically explain late-time acceleration due to the potential energy of time-dependent scalar fields associated with relevant scalar operators in the CFT. If such...
The AdS/CFT correspondence gives a remarkable description of a system with gravity in terms of a non-gravitating, quantum mechanical theory. Importantly, the geometry of the gravitating theory is recorded into the pattern of entanglement in the dual quantum mechanical system. This gives a new way of thinking about gravitational physics in terms of entanglement, but also gives a geometrical way...
We present a classical theory of gravity, which is singularity free at short distances and reduces to General Relativity at large distances. We discuss its implications for quantum gravity and cosmology.
