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arXiv 1012.3255nucl-th
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精确动力学与部分对称性

Exact Dynamical and Partial Symmetries

A. Leviatan

摘要:

我们讨论了一个层次的破缺对称性,特别强调部分动力学对称性(PDS)。后者对应于一种情况,其中非不变的哈密顿量容纳具有良好对称性的可解本征态的子集,而其他本征态混合。我们提出了一种算法,用于构建具有此属性的哈密顿量,并证明了相关的PDS概念,核谱学,量子相变和混合系统与共存的规则性和混乱。

英文摘要:

We discuss a hierarchy of broken symmetries with special emphasis on partial dynamical symmetries (PDS). The latter correspond to a situation in which a non-invariant Hamiltonian accommodates a subset of solvable eigenstates with good symmetry, while other eigenstates are mixed. We present an algorithm for constructing Hamiltonians with this property and demonstrate the relevance of the PDS notion to nuclear spectroscopy, to quantum phase transitions and to mixed systems with coexisting regularity and chaos.

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