منابع مشابه
Spectrum generating algebra of the symmetric top
The study of few-body problems has played an important role in many areas of physics [1]. Over the years accurate methods have been developed to solve the few-body equations. The degree of sophistication required depends on the physical system, i.e. to solve the fewbody problem in atomic physics requires a far higher accuracy than in hadronic physics. In recent years the development and applica...
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für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
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We analyze the uncertainties involved in obtaining the injection spectra of UHECR particles in the top-down scenario of their origin. We show that the DGLAP Q evolution of fragmentation functions (FF) to Q = MX (mass of the X particle) from their initial values at low Q is subject to considerable uncertainties. We therefore argue that, for x <∼ 0.1 (the x region of interest for most large MX va...
متن کاملA ug 1 99 7 1 Spectrum generating algebra of the symmetric top
We consider an algebraic treatment of a three-body system. We develop the formalism for a system of three identical objects and show that it provides a simultaneous description of the vibrational and rotational excitations of an oblate symmetric top.
متن کاملMonodromy in the spectrum of a rigid symmetric top molecule in an electric field
We show that for rigid symmetric top molecules in electric fields the phenomenon of monodromy arises naturally as a ‘‘defect’’ in the lattice of quantum states in the energy-momentum diagram. This makes it impossible to use either the total angular momentum or a pendular quantum number to label the states globally. The monodromy is created or destroyed by classical Hamiltonian Hopf bifurcations...
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ژورنال
عنوان ژورنال: Nature
سال: 1895
ISSN: 0028-0836,1476-4687
DOI: 10.1038/051438b0