6533b862fe1ef96bd12c63d2

RESEARCH PRODUCT

Multi-State Quantum Dissipative Dynamics in Sub-Ohmic Environment: The Strong Coupling Regime

Bernardo SpagnoloAngelo CarolloDavide ValentiLuca Magazzù

subject

Settore FIS/02 - Fisica Teorica Modelli E Metodi Matematiciquantum statistical methodsQuantum dynamicsPopulationGeneral Physics and Astronomylcsh:AstrophysicsOpen quantum systemPhysics and Astronomy (all)Quantum mechanicslcsh:QB460-466educationlcsh:ScienceQuantum statistical methodPhysicsQuantum discordeducation.field_of_studyopen quantum systemsDissipationlcsh:QC1-999Quantum processOpen quantum systemDissipative systemlcsh:QQuantum dissipationlcsh:Physicsquantum systems with finite Hilbert space

description

We study the dissipative quantum dynamics and the asymptotic behavior of a particle in a bistable potential interacting with a sub-Ohmic broadband environment. The reduced dynamics, in the intermediate to strong dissipation regime, is obtained beyond the two-level system approximation by using a real-time path integral approach. We find a crossover dynamic regime with damped intra-well oscillations and incoherent tunneling and a completely incoherent regime at strong damping. Moreover, a nonmonotonic behavior of the left/right well population difference is found as a function of the damping strength.

yearjournalcountryeditionlanguage
2015-04-17Entropy
10.3390/e17042341http://dx.doi.org/10.3390/e17042341