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arXiv 1111.5333quant-phcond-mat.str-elmath-phmath.MP
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谱简并量子系统的绝热定理

The Adiabatic Theorem for Quantum Systems with Spectral Degeneracy

Gustavo Rigolin, Gerardo Ortiz

摘要:

通过对量子力学绝热定理的清晰而严格的阐述,建立了该定理成立的一个必要条件和一个充分条件,其中充分条件是利用我们最近发展的绝热微扰理论得到的.此外,我们进一步简化为一个有用的和简单的实际测试,在其数学严谨的费用的充分条件。我们目前的结果为最一般的情况下,量子系统,即,那些具有简并能谱的。这些条件对于评估非阿贝尔编织和绝热量子计算的实际实现的有效性至关重要。为了说明退化绝热近似及其有效性的充分必要条件,我们深入分析了一个精确可解的含时退化问题。

英文摘要:

By stating the adiabatic theorem of quantum mechanics in a clear and rigorous way, we establish a necessary condition and a sufficient condition for its validity, where the latter is obtained employing our recently developed adiabatic perturbation theory. Also, we simplify further the sufficient condition into a useful and simple practical test at the expenses of its mathematical rigor. We present results for the most general case of quantum systems, i.e., those with degenerate energy spectra. These conditions are of upmost importance to assess the validity of practical implementations of non-Abelian braiding and adiabatic quantum computation. To illustrate the degenerate adiabatic approximation, and the necessary and sufficient conditions for its validity, we analyze in depth an exactly solvable time-dependent degenerate problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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