报告题目: |
Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques |
报告人: |
P Blair Blakie |
|
Dr.
Department of Physics and Jack Dodd Centre for Quantum Technology,
University of Otago
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报告时间: |
2010-06-18 15:30 |
报告地点: |
理科楼三楼报告厅 |
主办单位: |
物理系 |
简介: |
报告摘要：I will discuss phase space techniques based on the Wigner
representation that provide an approximate description of dilute
ultra-cold Bose gases. In this approach the quantum field evolution can be
represented using equations of motion of a similar form to the
Gross-Pitaevskii equation but with stochastic modifications that include
quantum effects in a controlled degree of approximation. These techniques
provide a practical quantitative description of both equilibrium and
dynamical properties of Bose gas systems. We develop versions of the
formalism appropriate to zero temperature, where quantum fluctuations can
be important, and at finite temperature where thermal fluctuations
dominate. Applications to a wide range of phenomena will be discussed. |
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