2026 CAP Congress / Congrès de l'ACP 2026

Session

(DTP) M1-6 | (DPT)

M1-6

22 Jun 2026, 10:15

U. Ottawa - Learning Crossroads (CRX) Building

994. Measuring a bulk's geometry from the outside

Simon Caron-Huot (McGill University)

22/06/2026, 10:15

Invited Speaker / Conférencier(ère) invité(e)

In a spacetime with asymptotically anti-de-Sitter boundaries, localized events in the bulk produce characteristic signals at boundary locations that are lightlike from the event. I will describe (thought) experiments that use these signals to measure the geometry and scattering amplitudes of processes happening inside the bulk, and discuss exterior signatures of bulk causality and local...

492. On sufficient conditions for holographic scattering

Chris Waddell (Perimeter Institute)

22/06/2026, 10:45

Theoretical Physics / Physique théorique (DTP-DPT)

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

Holography implies scattering in the bulk can be mediated by entanglement on the boundary. The connected wedge theorem (CWT) of May, Penington, and Sorce is a concrete example where bulk scattering implies correlation between certain boundary regions. However the converse does not hold. We investigate a recent proposal of Leutheusser and Liu for a generalization of the CWT with converse. We...

529. Towards a three-dimensional holographic picture of the pion

Prof. Ruben Sandapen (Acadia University)

22/06/2026, 11:00

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

In light-front holography, the transverse dynamics in the pion is described by the equation for scalar string modes in $AdS_5$ with a quadratic dilaton (soft-wall), resulting in a massless pion. To generate the physical pion mass and describe the low energy pion data, longitudinal dynamics must be considered. In a recent paper, Phys.Rev.D 111 (2025) 3, 034024 we identified a viable scenario...

933. Tropical Geometry and Quantum Field Theory

Prof. Freddy Cachazo

22/06/2026, 11:15

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier(ère) invité(e)

Over the past few years, new and exciting connections between tropical geometry and quantum field theory have been unearthed. In this talk I will review these developments with emphasis on recent ones (e.g. Feynman integrals, scattering amplitudes, and correlation functions).

579. Understanding RG flows in low dimensional QFT

Federico Ambrosino (Perimeter Institute)

22/06/2026, 11:45

Theoretical Physics / Physique théorique (DTP-DPT)

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

The behaviour of quantum systems dramatically depends on the energy scale at which they are probed. In Quantum Field Theories this phenomenon is described as a Renormalization Group flow between the UV (low distance) behaviour and the IR (long distances).
Given an quantum field theory in 4 spacetime dimensions, it is often a very hard task the one of identifying what is the low energy...