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Crossover-Time in Quantum Boson and Spin Systems
Gennady P. Berman
Evgeny N. Bulgakov
Darryl D. Holm
出版
Springer Science & Business Media
, 1994-07-26
主題
Computers / Information Technology
Mathematics / Mathematical Analysis
Science / Chaotic Behavior in Systems
Science / Physics / Nuclear
Science / Physics / Optics & Light
Science / Physics / General
Science / Physics / Quantum Theory
Science / Mechanics / Thermodynamics
Science / Waves & Wave Mechanics
Technology & Engineering / Lasers & Photonics
ISBN
3540580115
9783540580119
URL
http://books.google.com.hk/books?id=Bq4WLNlZHCwC&hl=&source=gbs_api
EBook
SAMPLE
註釋
The authors compare classical and quantum dynamics in the quasiclassical region of parameters and under the condition of unstable (chaotic) classical behavior. They estimate the characteristic time-scale at which classical and quantum solutions start to differ significantly. The method is based on exact equations for time-dependent expectation values in boson and spin coherent states, and applies to rather general Hamiltonians with many degrees of freedom. The authors develop a consistent dynamical theory for quantum nonintegrable Hamiltonians and provide explicit examples of classical-quantum "crossover-time," a very common and fundamental phenomenon in quantum nonintegrable systems. This book can be recommended to graduate students and to specialists.