Im Rahmen des Oberseminars Analysis/Numerik
spricht
Frau Dr. Shahnaz Farhat (Constructor University Bremen)
über
QUANTUM-CLASSICAL MOTION OF CHARGED PARTICLES INTERACTING WITH SCALAR FIELDS
The goal of this talk is to investigate the dynamics of semi-relativistic or non-relativistic charged particles in interaction with a scalar meson field. Our main contribution is the derivation of the classical dynamics of a particle-field system as an effective equation of the quantum microscopic Nelson model, in the classical limit where the value of the Planck constant approaches zero (ℏ → 0). Thus, we prove the validity of Bohr’s correspondence principle, that is to establish the transition from quantum to classical dynamics. We use a Wigner measure approach to study such transition. Then, as a consequence of this interplay between classical and quantum dynamics, we establish the global wellposedness of the classical particle-field interacting system, despite the low regularity of the related vector field, which prevents the use of a fixed point argument.
Der Vortrag findet statt am
Donnerstag, den 11.04.2024 um 14.15 Uhr im Raum W01 0-006