Year: 2023
Type: article
Abstract: Chain-mapping techniques combined with the time-dependent density matrix renormalization group are powerful tools for simulating the dynamics of open quantum systems interacting with structured bosonic environments. Most interestingly, they leave the degrees of freedom of the environment open to inspection. In this work, we fully exploit the access to environmental observables to illustrate how the evolution of the open quantum system can be related to the detailed evolution of the environment it interacts with. In particular, we give a precise description of the fundamental physics that enables the finite temperature chain-mapping formalism to express dynamical equilibrium states. Furthermore, we analyze a two-level system strongly interacting with a super-Ohmic environment, where we discover a change in the spin-boson ground state that can be traced to the formation of polaronic states.
Institutions: Centre National de la Recherche Scientifique, Institut national de recherche en sciences et technologies du numérique, University of Milan, Université Paris Sciences et Lettres, Sorbonne Université, Laboratoire de Physique de l'Ecole Normale Supérieure, Institut des NanoSciences de Paris, Centre Automatique et Systèmes, École Nationale Supérieure des Mines de Paris, Universität Ulm
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4388824997