2024 CAP Congress / Congrès de l'ACP 2024

Session

(DTP) R2-2 Quantum Theory and Gravity | Théorie quantique et gravité (DPT)

R2-2

30 May 2024, 14:15

Western University

Conveners

(DTP) R2-2 Quantum Theory and Gravity | Théorie quantique et gravité (DPT)

• Francesca Vidotto (The University of Western Ontario)

4299. Infinitesimal Limit of Quantum Teleportation

Barbara Soda (Perimeter Institute for Theoretical Physics)

30/05/2024, 14:15

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier(ère) invité(e)

We use the port-based teleportation protocol to study teleportation over infinitesimally small distances, where the vacuum of a quantum field serves as the source of entanglement. We find that the resulting motion is equivalent to a quantum teleportation-induced Brownian motion. Purifying the interactions, from measurements to unitary operations, leads to motion described by Schrodinger’s...

4427. Quantum reference frames and relational subsystems

Fabio Maria Mele (University of Western Ontario)

30/05/2024, 14:45

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

One of the most basic notions in physics is the partitioning of a system into subsystems and the study of correlations among its parts. Operationally, subsystems are distinguished by physically accessible observables which are often implicitly specified relative to some external and/or background structure. In the absence of external relata as in Page-Wootters dynamics, gauge theories, and...

4107. A minimal-uncertaininty quantum black hole

Saeed Rastgoo (University of Alberta)

30/05/2024, 15:00

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

Minimal uncertainty, also known as generalized uncertainty principle, is in effect a modification to the algebra of a quantum system and can be considered a deformed algebra approach to quantum gravity.
I will present the full spacetime effective metric of a Schwarzschild black hole within the minimal uncertainty approach. I will explain how one can quantize the interior, and extend the...

4199. Quantum Superposition of Black Holes

Robert Mann

30/05/2024, 15:15

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

If relativistic gravitation has a quantum description, it must be meaningful to consider a spacetime metric in a genuine quantum superposition. But how might such a superposition be described, and how could observers detect it? I will present a new operational framework for studying “superpositions of spacetimes” via model particle detectors. After presenting the general approach, I show...

4147. Generalized volume complexity of AdS rotating black holes

Dr Ming Zhang (University of Waterloo)

30/05/2024, 15:30

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

We explore the generalized volume complexity of odd-dimensional asymptotically Anti-de Sitter (AdS) Myers-Perry black holes with equal angular momenta following the complexity equals anything proposal. Initially, we determine the codimension-one generalized volume complexity by finding the extreme of the generally covariant volume functional. We show that its late-time growth rate aligns with...