Conveners
(W1-4) Fields and Strings - DTP / Champs et cordes - DPT
- Arundhati Dasgupta (University of Lethbridge)
Prof.
Achim Kempf
(University of Waterloo)
18/06/2014, 08:30
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Quantum information theoretic tools could be used to study the most basic physical phenomena. For example, measurements of quantum entanglement allow one, in principle, to detect curvature. I am proposing that curvature may be expressible entirely in terms of entanglement. This would open up the prospect that quantum gravity could be simulated on a quantum computer. Mathematical results that...
Keith Ng
(University of Waterloo)
18/06/2014, 09:00
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
It is well-known that black holes emit Hawking radiation, which has a characteristic temperature; observers outside the black hole observe the emission of particles. We consider a conformally coupled scalar field around a black hole in an asymptotically AdS spacetime. By using a simple model of a particle detector, we can probe the spectral features of this radiation. We calculate the response...
Alexander Smith
(U)
18/06/2014, 09:15
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
The apparent triviality of the topology of our universe stands in stark contrast to the properties of general relativity, which admits all possible topologies. The topological censorship theorem resolves this conundrum insofar as it relegates all isolated topological structures (such as wormholes) inaccessible to observers by any classical experimental means.
I will show here that an...
Wilson Brenna
(University of Waterloo)
18/06/2014, 09:30
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)
Building on previous numerical non-perturbative studies of the Unruh effect on a harmonic-oscillator-detector in a cavity, we seek to explain the nuances involved in taking the continuum limit of an Unruh-DeWitt detector as the cavity becomes large. While we have previously replicated the linear dependence of temperature on acceleration, here we will discuss how in the continuum limit the...
Richard MacKenzie
(U)
18/06/2014, 09:45
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
We consider a field theory model in 1+1 dimensions with a discrete internal symmetry. The model is such that the true vacuum respects this symmetry but it is broken in a pair of false vacua. Solitons interpolating between the false vacua necessarily pass through the true vacuum and are unstable. Adding a second scalar field, it is possible to stabilize the soliton against small fluctuations....
