Hyperfine interaction in ground and excited states of praseodymium-doped yttrium orthosilicate

Lutetium Yttrium Orthosilicate Single Crystal Scintillator Detector

Hyperfine Structure of the Ground and First Excited States in Light Hydrogen-Like Atoms and High-Precision Tests of QED

We consider hyperfine splitting of 1s and, in part, of 2s levels in light hydrogen-like atoms: hydrogen, deuterium, tritium, helium-3 ion, muonium and positronium. We discuss present status of precision theory and experiment for the hfs intervals. We pay a special attention to a specific difference, D21 = 8Ehfs(2s) − Ehfs(1s), which is known experimentally for hydrogen, deuterium and He ion. Th...

Exact Ground and Excited States of a T-j Ladder Doped with Two Holes

A two chain ladder model is considered described by the strong coupling t− t′−J −J ′ Hamiltonian. For the case of two holes moving in a background of antiferromagnetically interacting spins, exact, analytical results are derived for the ground state energy and low-lying excitation spectrum. The ground state is a bound state of two holes with total spin S=0. The charge excitation is gapless and ...

Exact Ground States and Excited States of Net Spin Models

We study a set of exactly soluble net spin models. There exist two kinds of ground state, one is a complete dimerized state, and the other one is the ground state of corresponding spin-1 model. For the excitation gap, various phases were discovered and determined. PACS number: 75.10.-b, 75.10.Jm, 75.30.Kz Typeset using REVTEX 1 It is well known that a spin-1/2 antiferromagnetic chain with neare...

Structure and spectroscopy of ground and excited states of LiYb.

Multireference configuration interaction and coupled cluster calculations have been carried out to determine the potential energy curves for the ground and low-lying excited states of the LiYb molecule. The scalar relativistic effects have been included by means of the Douglas-Kroll Hamiltonian and effective core potential and the spin-orbit couplings have been evaluated by the full microscopic...