25,610 research outputs found

    Multipole Moments of Fractal Distribution of Charges

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    In this paper we consider the electric multipole moments of fractal distribution of charges. To describe fractal distribution, we use the fractional integrals. The fractional integrals are considered as approximations of integrals on fractals. In the paper we compute the electric multipole moments for homogeneous fractal distribution of charges.Comment: LaTeX, 11 page

    Characterization of surficial units on Mars using Viking orbiter multispectral image and thermal data

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    Albedo and thermal property correlations of the topography of Mars were conducted with emphases upon the types and origins of materials exposed in the central equatorial region. This area displays a wide variation in color, albedo and thermal properties, and is relatively free of dust and haze. The physical, mineralogical and elemental characteristics of this area are discussed

    The Top Triangle Moose

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    We introduce a deconstructed model that incorporates both Higgsless and top-color mechanisms. The model alleviates the typical tension in Higgsless models between obtaining the correct top quark mass and keeping delta-rho small. It does so by singling out the top quark mass generation as arising from a Yukawa coupling to an effective top-Higgs which develops a small vacuum expectation value, while electroweak symmetry breaking results largely from a Higgsless mechanism. As a result, the heavy partners of the SM fermions can be light enough to be seen at the LHC.Comment: To appear in proceedings of SCGT09, Nagoya, Japan. 5 page

    Spectroscopy of a synthetic trapped ion qubit

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    133Ba+^{133}\text{Ba}^+ has been identified as an attractive ion for quantum information processing due to the unique combination of its spin-1/2 nucleus and visible wavelength electronic transitions. Using a microgram source of radioactive material, we trap and laser-cool the synthetic AA = 133 radioisotope of barium II in a radio-frequency ion trap. Using the same, single trapped atom, we measure the isotope shifts and hyperfine structure of the 62P1/26^2 \text{P}_{1/2} ↔\leftrightarrow 62S1/26^2 \text{S}_{1/2} and 62P1/26^2 \text{P}_{1/2} ↔\leftrightarrow 52D3/25^2 \text{D}_{3/2} electronic transitions that are needed for laser cooling, state preparation, and state detection of the clock-state hyperfine and optical qubits. We also report the 62P1/26^2 \text{P}_{1/2} ↔\leftrightarrow 52D3/25^2 \text{D}_{3/2} electronic transition isotope shift for the rare AA = 130 and 132 barium nuclides, completing the spectroscopic characterization necessary for laser cooling all long-lived barium II isotopes
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