TY  - EJOUR
AU  - Angelides, Takis
AU  - Guo, Yibin
AU  - Jansen, Karl
AU  - Kühn, Stefan
AU  - Magnifico, Giuseppe
TI  - Meson thermalization with a hot medium in the open Schwinger model
IS  - DESY-25-015
M1  - PUBDB-2025-00349
M1  - DESY-25-015
M1  - arXiv:2501.13675
PY  - 2025
N1  - 30 pages, 16 figures
AB  - Quantum field theories treated as open quantum systems provide a crucial framework for studying realistic experimental scenarios, such as quarkonia traversing the quark-gluon plasma produced at the Large Hadron Collider. In such cases, capturing the complex thermalization process requires a detailed understanding of how particles evolve and interact with a hot medium. Considering the open lattice Schwinger model and using tensor network algorithms, we investigate the thermalization dynamics of mesonic particles in a hot medium, such as the Schwinger boson or the electric flux string. We simulate systems with up to 100 lattice sites, achieving accurate preservation of the electric field parity symmetry, demonstrating the algorithm's robustness and scalability. Our results reveal that the thermalization time increases with stronger dissipation from the environment, increasing environment temperature, higher background electric field and heavier fermion masses. Further, we study the quantum mutual information between the two halves of the flux string connecting a meson's constituent particles and analyze its relation to relevant dynamical observables.
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2025-00349
UR  - https://bib-pubdb1.desy.de/record/622486
ER  -