Entanglement and geometry in non-relativistic scattering

par Prof. Silas Beane (University of Washington)

vendredi 2 févr. 2024, 14:00 → 15:00 Europe/Paris

100/0-A018 - Salle Library (IJCLab)

Recent work has found that minimization of quantum entanglement in low-energy baryon-baryon 
scattering has interesting phenomenological implications, and leads to a novel view of emergent
symmetries. I will review these developments as well as extensions to three-body systems and 
systems involving pions. Then, in an effort to provide insight into the role of entanglement in 
scattering, I will show how the S-matrix which describes non-relativistic scattering of particles
interacting via finite-range forces, can be obtained from a geometric action principle in which 
space and time do not appear explicitly. In general, isotropic scattering of non-relativistic 
spin-J fermions has a geometric description as a trajectory between vertices of 2J+1-cube 
self-dual honeycombs. I will describe the relation between the space-time effective field 
theory and the space-time-independent geometric theory for some simple cases, and focus 
on the manner in which unitarity, causality and spin entanglement are manifest in the 
geometric description.
 

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How to reach the seminar room:

Whereabouts of the laboratory on the Paris-Saclay campus

Bat. 100, general room map

Abstract.pdf