SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 45: Photonics III

Q 45.8: Vortrag

Donnerstag, 9. März 2023, 12:45–13:00, A320

From Berry phase to quantum skyrmions: a geometric loop tour in Physics — •Sinuhe Perea — Strand King's College London

In several physics systems the whole can be obtained as an exact copy of each of its parts, which facilitates the study of a complex system by looking carefully at its elements, separately. Reducionism offers simplified models which makes the problems easier, but ``there's plenty of room...at the \emph{mesoscopic} scale''. Here we present a tour for two of its representants: Berry phase and skyrmions, studying some of its basic definitions and properties, and two cases in which both arise together, to finish constraining the scale for our mesoscopic system in the quest of quantum skyrmions, discovering which properties are conserved and which others may be destroyed. In several classical physics systems the whole can be obtained as an exact copy of each of its parts, which facilitates the study of a complex system by looking carefully at its elements, separately. Reductionism offers simplified models which makes the problems easier, but "there's plenty of room...at the discrete scale". Here we present a tour for two of its representants: Constant section fiber bundles and skyrmions, studying some of its basic definitions and properties, and an example where both arise together via domain wall analogy. We will finish constraining the scale for our mesoscopic system in the quest of quantum and photonic skyrmions from above via Hamiltonian local minimisation and for below via novel graphic re-writing evolution, discovering which properties are conserved and which others may be destroyed.