Thermalization of Finite Many-Body Systems by a Collision Model
| Autor: | Steve Campbell, Onat Arısoy, Özgür E. Müstecaplıoğlu |
|---|---|
| Přispěvatelé: | Arısoy, Onat, Müstecaplıoğlu, Özgür Esat (ORCID 0000-0002-9134-3951 & YÖK ID 1674), Campbell, Steve, Graduate School of Sciences and Engineering, College of Sciences, Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Coupling thermalization many-body quantum systems Quantum Physics Statistical Mechanics (cond-mat.stat-mech) FOS: Physical sciences General Physics and Astronomy Collision model 01 natural sciences Physics multidisciplinary Many body Article 010305 fluids & plasmas Thermalization Many-body quantum systems Thermalisation 0103 physical sciences Master equation Thermal Statistical physics collision model Quantum Physics (quant-ph) 010306 general physics Condensed Matter - Statistical Mechanics |
| Zdroj: | Entropy Volume 21 Issue 12 |
| ISSN: | 1099-4300 |
| Popis: | We construct a collision model description of the thermalization of a finite many-body system by using careful derivation of the corresponding Lindblad-type master equation in the weak coupling regime. Using the example of a two-level target system, we show that collision model thermalization is crucially dependent on the various relevant system and bath timescales and on ensuring that the environment is composed of ancillae which are resonant with the system transition frequencies. Using this, we extend our analysis to show that our collision model can lead to thermalization for certain classes of many-body systems. We establish that for classically correlated systems our approach is effective, while we also highlight its shortcomings, in particular with regards to reaching entangled thermal states. Science Foundation Ireland Starting Investigator Research Grant, SpeedDemon |
| Databáze: | OpenAIRE |
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