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Crossover-Time in Quantum Boson and Spin Systems
Gennady P. BermanEvgeny N. BulgakovDarryl D. Holm
出版Springer Science & Business Media, 2008-10-04
主題Science / Physics / Quantum TheoryComputers / Information TechnologyScience / Mechanics / ThermodynamicsScience / Physics / GeneralScience / Physics / Optics & Light
ISBN35404841599783540484158
URLhttp://books.google.com.hk/books?id=4-nxCAAAQBAJ&hl=&source=gbs_api
EBookSAMPLE
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.