The first part of this work deals with a formalism of vector coherent states construction for a system of $M$ Fermi-type modes associated with $N$ bosonic modes. Then follows a generalization to a Hamiltonian describing the translational motion of the center of mass of a nanoparticle. The latter gives rise to a new mechanism for the electronic energy relaxation in nanocrystals, intensively studied today in condensed matter physics. Finite degeneracies of the involved Hamiltonian systems are also investigated. The defined vector coherent states satisfy relevant mathematical properties of continuity, resolution of identity, temporal stability and action identity.
Coherent states associated with tridiagonal Hamiltonians
已经证明,在给定基中具有三对角矩阵表示的半正定哈密顿量H可以表示为H = A <$A的形式,其中A是扮演湮灭算子角色的前向移位算子。这样的表示赋予H丰富的超对称性质产生类似的结果,通过研究作为微分算子的哈密顿量。在这里,我们研究相干态,我们定义为运营商A的本征态。我们明确地找到这些国家在给定的基础上的膨胀系数。我们进一步确定了一套完整的特殊相干态,它们本身可以作为基础。对于这些特殊的相干态,我们证明了一般相干态具有拉格朗日插值展开形式。作为应用程序的发展形式主义,我们工作的系统具有纯离散,纯连续,或混合能谱的例子。
Coherent energy cascades in nonlinear disordered Hamiltonians
Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de Compostela(加利西亚高能物理研究所,圣地亚哥-德孔波斯特拉大学);High Energy Physics Research Unit, Faculty of Science, Chulalongkorn University(朱拉隆功大学理学院高能物理研究组);Theoretische Natuurkunde, Vrije Universiteit Brussel (VUB) & International Solvay Institutes(布鲁塞尔自由大学理论物理系及国际索尔维研究所)