Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 13-28 |
| Seitenumfang | 16 |
| Fachzeitschrift | European Physical Journal: Special Topics |
| Jahrgang | 151 |
| Publikationsstatus | Veröffentlicht - Dez. 2007 |
| Extern publiziert | Ja |
Abstract
The time-convolutionless (TCL) projection operator technique allows a systematic analysis of the dynamical properties of open quantum systems. Unfortunately, using the standard projector to investigate the decay to equilibrium fails to describe the dynamics of a small system coupled to a finite environment correctly.However, a recently introduced correlated projection operator leads to the appropriate dynamical behavior and shows a reasonable good agreement with the exact Schrödinger dynamics.Furthermore, a similar projector can be used to describe the transport through a quantum system.Using the technique in Fourier space allows for a detailed analysis of transport in the context of its length scale dependence as well.Finally, the method is also applicable to realistic systems, e.g., spin models.
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- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
- Chemie (insg.)
- Physikalische und Theoretische Chemie
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in: European Physical Journal: Special Topics, Jahrgang 151, 12.2007, S. 13-28.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Correlated projection superoperators in relaxation and transport investigations
AU - Michel, M.
AU - Steinigeweg, R.
AU - Weimer, H.
N1 - Funding information: We thank H.-P. Breuer, J. Gemmer, G. Mahler and H.-J. Schmidt for fruitful discussions. Financial support by the “Deutsche Forschungsgemeinschaft” (DFG) is greatfully acknowledged.
PY - 2007/12
Y1 - 2007/12
N2 - The time-convolutionless (TCL) projection operator technique allows a systematic analysis of the dynamical properties of open quantum systems. Unfortunately, using the standard projector to investigate the decay to equilibrium fails to describe the dynamics of a small system coupled to a finite environment correctly.However, a recently introduced correlated projection operator leads to the appropriate dynamical behavior and shows a reasonable good agreement with the exact Schrödinger dynamics.Furthermore, a similar projector can be used to describe the transport through a quantum system.Using the technique in Fourier space allows for a detailed analysis of transport in the context of its length scale dependence as well.Finally, the method is also applicable to realistic systems, e.g., spin models.
AB - The time-convolutionless (TCL) projection operator technique allows a systematic analysis of the dynamical properties of open quantum systems. Unfortunately, using the standard projector to investigate the decay to equilibrium fails to describe the dynamics of a small system coupled to a finite environment correctly.However, a recently introduced correlated projection operator leads to the appropriate dynamical behavior and shows a reasonable good agreement with the exact Schrödinger dynamics.Furthermore, a similar projector can be used to describe the transport through a quantum system.Using the technique in Fourier space allows for a detailed analysis of transport in the context of its length scale dependence as well.Finally, the method is also applicable to realistic systems, e.g., spin models.
UR - http://www.scopus.com/inward/record.url?scp=40949134293&partnerID=8YFLogxK
U2 - 10.1140/epjst/e2007-00358-5
DO - 10.1140/epjst/e2007-00358-5
M3 - Article
AN - SCOPUS:40949134293
VL - 151
SP - 13
EP - 28
JO - European Physical Journal: Special Topics
JF - European Physical Journal: Special Topics
SN - 1951-6355
ER -