2017 CAP Congress / Congrès de l'ACP 2017

Session

T1-4 Gravity and Cosmology (DTP) | Gravité et cosmologie (DPT)

T1-4

30 May 2017, 08:00

Botterell B143 (Queen's University)

Conveners

T1-4 Gravity and Cosmology (DTP) | Gravité et cosmologie (DPT)

• Svetlana Barkanova (Acadia University)

1854. Entropy in Quantum Gravity

Arundhati Dasgupta (University of Lethbridge)

30/05/2017, 08:00

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier invité

Black hole thermodynamics has motivated a search for deeper connection of entropy and gravity. We investigate this using a formulation of quantum field theory using non-unitary operators which give rise to entropy production. We try to obtain the physical consequences of this for quantum cosmology.

1683. **WITHDRAWN** Time and the Hamiltonian Constraint

Alexander Smith (University of Waterloo)

30/05/2017, 08:30

Theoretical Physics / Physique théorique (DTP-DPT)

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

The canonical quantization of gravity leads to the Hamiltonian constraint: physical states of the theory are annihilated by the Hamiltonian. Combined with the Schrodinger equation, the Hamiltonian constraint dictates that the physical states of the theory do not evolve in time. Given that the physical states do not evolve, how do we explain the time evolution we see around us? The conditional...

1876. **WITHDRAWN** Strong transient modulation of horizon radiation

Aida Ahmadzadegan (University of Waterloo)

30/05/2017, 08:45

Theoretical Physics / Physique théorique (DTP-DPT)

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

As a black hole grows, its Hawking radiation is not thermal and, depending on the extent to which the Hawking spectrum is modulated, it can carry information about the infalling matter. Analogously, via the equivalence principle, the Unruh spectrum of non-uniformly accelerated trajectories is not thermal and, depending on the extent to which the Unruh radiation is modulated, it can carry...