56,191 research outputs found

    Convoluting device for forming convolutions and the like Patent

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    Punch and die device for forming convolution series in thin gage metal hemisphere

    Lower Bound on the Propagation Speed of Gravity from Gravitational Cherenkov Radiation

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    Recently, interesting 4-D Lorentz violating models have been proposed, in which all particles have a common maximum velocity cc, but gravity propagates (in the preferred frame) with a different maximum velocity cg≠cc_g \neq c. We show that the case cg<cc_g < c is very tightly constrained by the observation of the highest energy cosmic rays. Assuming a galactic origin for the cosmic rays gives a conservative bound of c−cg<2×10−15cc-c_g < 2 \times 10^{-15} c; if the cosmic rays have an extragalactic origin the bound is orders of magnitude tighter, of order c−cg<2×10−19cc-c_g < 2 \times 10^{-19} c.Comment: 8 pages with 1 figure, JHEP style. References added, slight (superficial) change

    Studies of lunar and Martian soil mechanics Third quarterly progress report, Jun. - Sep. 15, 1965

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    Lunar and Martian soil mechanics - soil shear strength and penetration resistance under high vacuum, and composition of desorbed gases from heated soil sample

    Studies of lunar soil mechanics, final report, jun. 15, 1963 - dec. 15, 1964

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    Properties of simulated lunar soils in lunar environmen

    The generalized Fenyes-Nelson model for free scalar field theory

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    The generalized Fenyes--Nelson model of quantum mechanics is applied to the free scalar field. The resulting Markov field is equivalent to the Euclidean Markov field with the times scaled by a common factor which depends on the diffusion parameter. This result is consistent between Guerra's earlier work on stochastic quantization of scalar fields. It suggests a deep connection between Euclidean field theory and the stochastic interpretation of quantum mechanics. The question of Lorentz covariance is also discussed.Comment: 6 page

    A QUANTITATIVE APPROACH TO THE FEEDLOT REPLACEMENT DECISION

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    Livestock Production/Industries,

    Improving the J/psi Production Baseline at RHIC and the LHC

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    We assess the theoretical uncertainties on the inclusive J/psi production cross section in the Color Evaporation Model (CEM) using values for the charm quark mass, renormalization and factorization scales obtained from a fit to the charm production data. We use our new results to provide improved baseline comparison calculations at RHIC and the LHC. We also study cold matter effects on J/psi production at leading relative to next-to-leading order in the CEM within this approach.Comment: Proceedings for Hard Probes 2012, Cagliari, Ital

    Progress in Electroweak Baryogenesis

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    Recent work on generating the excess of matter over antimatter in the early universe during the electroweak phase transition is reviewed.Comment: 50 pages (figures on request), uses harvmac (table of contents correct for "l" format), UCSD-93-2,BU-HEP-93-
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