The Entanglement of the XY Spin Chain in a Random Magnetic Field(General)
スポンサーリンク
概要
- 論文の詳細を見る
We investigate the entanglement of the ferromagnetic XY model in a random magnetic field at zero temperature and in the uniform magnetic field at finite temperatures. We use the concurrence to quantify the entanglement. We find that, in the ferromagnetic region of the uniform magnetic field h, all the concurrences are generated by the random magnetic field and by the thermal fluctuation. In one particular region of h, the next-nearest neighbor concurrence is generated by the random field but not at finite temperatures. We also find that the qualitative behavior of the maximum point of the entanglement in the random magnetic field depends on whether the variance of its distribution function is finite or not.
- 社団法人日本物理学会の論文
- 2007-09-15
著者
-
Hatano Naomichi
Institute Of Industrial Science The University Of Tokyo
-
Fujinaga Masashi
Department Of Physics University Of Tokyo
関連論文
- Hofstadter's Butterfly Type of Singular Spectrum of a Collision Operator for a Model of Molecular Chains(Frontiers in Nonequilibrium Physics-Fundamental Theory, Glassy & Granular Materials, and Computational Physics-)
- Resonant States of Open Quantum Systems(Frontiers in Nonequilibrium Physics-Fundamental Theory, Glassy & Granular Materials, and Computational Physics-)
- The Exchange Fluctuation Theorem in Quantum Mechanics(General and Mathematical Physics)
- Some Properties of the Resonant State in Quantum Mechanics and Its Computation(Condensed Matter and Statistical Physics)
- Calculation of the Self-Energy of Open Quantum Systems
- Strong Resonance of Light in a Cantor Set(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Transient Oscillation of Currents in Quantum Hall Effect of Bloch Electrons(Condensed matter: electronic structure and electric, magnetic, and optical properties)
- Temporal Oscillation of Conductances in Quantum Hall Effect of Bloch Electrons(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- A Non-Hermitian Critical Point and the Correlation Length of Strongly Correlated Quantum Systems(General)
- The Entanglement of the XY Spin Chain in a Random Magnetic Field(General)
- Resonance in an Open Quantum Dot System with a Coulomb Interaction : a Bethe-Ansatz Approach(General)
- Resonant Spectrum Analysis of the Conductance of an Open Quantum System and Three Types of Fano Parameter