### Conveners

#### R1-5 Quantum Gravity and Quantum Cosmology (DTP) / Gravité quantique et cosmologie quantique (DPT)

- Arundhati Dasgupta (University of Lethbridge)

Douglas Gingrich
(University of Alberta (CA))

6/18/15, 8:45 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier invité

Less than two decades ago, brane world scenarios offered paradigms to
reinterpret the 4-D Planck scale as an effective gravity scale arising
for a more fundamental lower gravity scale in higher dimensions. These
ideas allowed new phenomenological models to be developed and helped guide
searches for low-scale gravity at the Tevatron and LHC. One of the most
exciting outcomes of these...

Prof.
Philip Stamp
(UBC)

6/18/15, 9:15 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier invité

It is argued that gravity should cause a breakdown of quantum mechanics, at low energies, accessible in principle to table-top experiments. I show
that one can formulate a theory of quantum gravity in which gravitational
correlations exist between worldline or worldsheet paths, for the particle
or field of interest. Using a generalized equivalence principle, one can
give a unique form...

Soumen Deb
(University of Lethbridge)

6/18/15, 9:45 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Quantum gravity induced modifications of position/momentum commutation relation brings about a modification of the Heisenberg's uncertainty principle, to what is known as the generalized uncertainty principle (GUP). It has been shown earlier that the GUP-induced corrections to the Schrödinger equation, when applied to a non-relativistic particle in a one-dimensional infinite potential well,...

Mr
Matthew Robbins
(University of Lethbridge)

6/18/15, 10:00 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

As it is currently not possible to access the natural energy scale of quantum gravity (the Planck scale), it is important to look for low-energy effects, e.g. the quantum gravity induced perturbative corrections to non-relativistic quantum mechanics. One such avenue of approach is studying the corrections to the Schrödinger equation via the Generalized Uncertainty Principle (GUP) proposed in...

Dr
Jonathan Ziprick
(urn:Google)

6/18/15, 10:15 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / orale (non-étudiant)

We study a pressureless dust coupled to gravity with an arbitrary cosmological constant $\Lambda$ in 2+1 dimensions. This theory has interesting classical solutions and yet remains simple enough to explore the non-perturbative quantization of gravitational degrees of freedom. On the classical side we find the Banados-Teitelboim-Zanelli black hole as a static solution when $\Lambda<0$, and for...

Keith Ng
(University of Waterloo)

6/18/15, 10:30 AM

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Classically, the equivalence principle tells us that an observer cannot determine the global structure of spacetime using local measurements. After reviewing previous results demonstrating the sensitivity of detectors to spacetime, I proceed to our most recent result: that one can distinguish between a detector in flat space and one inside a hollow spherical shell by measuring the energy...