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Now showing items 11-20 of 137
Observation of interference fringes in Autler-Townes line shapes
(American Physical Society, 1996)
We observe Ramsey fringes in the absorption line shape for a weak optical field probing the transition between an unperturbed quantum state and one that is dynamically Stark shifted by a strong pump field.
Quadratic Diffusion Monte-Carlo Algorithms for Solving Atomic Many-Body Problems
(American Physical Society, 1990)
The diffusion Monte Carlo algorithm with and without importance sampling is analyzed in terms of the algorithm's underlying transfer matrix. The crucial role played by the Langevin algorithm in the importance-sampling ...
Spectra and magnetic properties of large spins in external fields
(American Physical Society, 1999)
Spectra and magnetic properties of large spins J (e.g., spins possessed by ions or molecules), placed into a crystal electric field (CEF) of an arbitrary symmetry point group, are shown to change drastically when J changes ...
Proposal for a Loophole-Free Test of the Bell Inequalities
(American Physical Society, 1995)
A proposal for an experimental realization of Bohm's spin-1/2 particle version of the Einstein-Podolsky-Rosen experiment is described. Two Hg-199 atoms, each with nuclear spin 1/2, are produced in an entangled state with ...
Anisotropic magnetoresistance of single-crystal HoNi2B2C and the interplay of magnetic and superconducting order
(American Physical Society, 1996)
The in-plane resistivity and magnetization measurements as a function of the magnitude and direction of the magnetic field and the temperature are reported for single-crystal samples of the HoNi2B2C magnetic superconductor. ...
Electronic-Structure of the Semimetals Bi and Sb
(American Physical Society, 1995)
We have developed a third-neighbor tight-binding model, with spin-orbit coupling included, to treat the electronic properties of Bi and Sb. This model successfully reproduces the features near the Fermi surface that will ...
Fragmentation Barriers of Toroidal and Bubble Nuclei
(American Physical Society, 1994)
With an improved Boltzmann-Uehling-Uhlenbeck model, the deformation energy surfaces in reactions leading to the formation of toroidal and bubble nuclei are examined for central Mo-92+Mo-92 collisions. We found that the ...
Dielectron Production in Proton-Nucleus Reactions
(American Physical Society, 1990)
Hall-Coefficient for Oriented Tl2ba2cacu2o8+delta Thin-Films
(American Physical Society, 1993)
Measurements of the Hall coefficient and resistivity for highly oriented Tl2Ba2CaCu2O8+delta thin films are reported. The temperature dependence of cotTHETA(H), where THETA(H) is the normal-state Hall angle, for a single-phase ...