Explicit Exchange Interaction and Decoherence Dynamics in One-Dimensional Quantum Systems

Explicit Exchange Interaction and Decoherence Dynamics in One-Dimensional Quantum Systems

In this thesis, we investigate two aspects of one-dimensional interacting quantum systems. The first one is the effect of explicit antiferromagnetic exchange interactions on the quantum phase transitions of a one-dimensional itinerant electron system. The second one is the decoherence of a qubit...

詳細記述

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書誌詳細
第一著者: Huang, Xiaoxuan
その他の著者: Noack, Reinhard (Prof. Dr.) (論文の指導者)
フォーマット: Dissertation
言語:英語
出版事項: Philipps-Universität Marburg 2011
主題:
Metal-insulator transitions and other electronic transitions
Quantum phase transitions
Starke Kopplung
Quantenphasenübergang
Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
Density matrix renormalization group
Kohärenz
Critical point phenomena
Physik
Lattice fermion models (Hubbard model, etc.)
Decoherence; open systems; quantum statistical methods (see also 03.67.Pp in quantum information; for decoherence in Bose-Einstein condensates, see 03.75.Gg)
Stark korrelierte Systeme
Dekohärenz
Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.)
Lattice theory and statistics (Ising, Potts, etc.) (see also 64.60.Cn Order-disorder transformations and statistical mechanics of model systems and 75.10.Hk Classical spin models)
Dichtematrix
Dichtematrixrenormierungsgruppe
Strongly correlated systems
Decoherence
Quantum computation
Physics
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その他の書誌記述
要約:In this thesis, we investigate two aspects of one-dimensional interacting quantum systems. The first one is the effect of explicit antiferromagnetic exchange interactions on the quantum phase transitions of a one-dimensional itinerant electron system. The second one is the decoherence of a qubit coupled to a one-dimensional quantum spin system.
DOI:10.17192/z2011.0113

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