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arXiv math-ph/0411022math-phcond-mat.otherhep-thmath.MP
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含缺陷非线性薛定谔方程组的自发对称性破缺

Spontaneous symmetry breaking in the non-linear Schrodinger hierarchy with defect

Vincent Caudrelier, Eric Ragoucy

摘要:

引入并求解了定义在原点有缺陷的实直线上的N分量场的一维量子非线性薛定谔方程。量子解是基于最近引入的反射-透射(RT)代数的概念,利用量子逆散射方法构造的。模型的对称性是由定义缺陷子代数的反射和透射缺陷生成器生成的。我们对所有相应的反射和透射矩阵进行分类。这提供了正则场所服从的可能的边界条件,我们明确地计算这些边界条件。最后,我们展示了由缺陷引起的自发对称性破缺现象,并确定了未破缺的生成元以及精确的剩余对称性。

英文摘要:

We introduce and solve the one-dimensional quantum non-linear Schrodinger (NLS) equation for an N-component field defined on the real line with a defect sitting at the origin. The quantum solution is constructed using the quantum inverse scattering method based on the concept of Reflection-Transmission (RT) algebras recently introduced. The symmetry of the model is generated by the reflection and transmission defect generators defining a defect subalgebra. We classify all the corresponding reflection and transmission matrices. This provides the possible boundary conditions obeyed by the canonical field and we compute these boundary conditions explicitly. Finally, we exhibit a phenomenon of spontaneous symmetry breaking induced by the defect and identify the unbroken generators as well as the exact remaining symmetry.

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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