2,505 research outputs found

    VELO Module Production - Module Electrical Tests

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    This note describes in detail the procedures used in the electrical testing of the hybrids at various stages in the production process using the NA60 DAQ and the Lab VIEW program Module Testing

    Universality and Crossover of Directed Polymers and Growing Surfaces

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    We study KPZ surfaces on Euclidean lattices and directed polymers on hierarchical lattices subject to different distributions of disorder, showing that universality holds, at odds with recent results on Euclidean lattices. Moreover, we find the presence of a slow (power-law) crossover toward the universal values of the exponents and verify that the exponent governing such crossover is universal too. In the limit of a 1+epsilon dimensional system we obtain both numerically and analytically that the crossover exponent is 1/2.Comment: LateX file + 5 .eps figures; to appear on Phys. Rev. Let

    VELO Module Production - Module Assembly

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    This note describes in detail the procedures used in the gluing of sensors to hybrid and hybrid to pedestal for the LHCb VELO detector module assembly

    Spectral properties of a partially spin-polarized one-dimensional Hubbard/Luttinger superfluid

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    We calculate the excitation spectra of a spin-polarized Hubbard chain away from half-filling, using a high-precision momentum-resolved time-dependent Density Matrix Renormalization Group method. Focusing on the U<0 case, we present in some detail the single-fermion, pair, density and spin spectra, and discuss how spin-charge separation is altered for this system. The pair spectra show a quasi-condensate at a nonzero momentum proportional to the polarization, as expected for this Fulde-Ferrel-Larkin-Ovchinnikov-like superfluid.Comment: 4 pages, 3 low resolution color fig

    Numerical Results for the Ground-State Interface in a Random Medium

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    The problem of determining the ground state of a dd-dimensional interface embedded in a (d+1)(d+1)-dimensional random medium is treated numerically. Using a minimum-cut algorithm, the exact ground states can be found for a number of problems for which other numerical methods are inexact and slow. In particular, results are presented for the roughness exponents and ground-state energy fluctuations in a random bond Ising model. It is found that the roughness exponent ζ=0.41±0.01,0.22±0.01\zeta = 0.41 \pm 0.01, 0.22 \pm 0.01, with the related energy exponent being θ=0.84±0.03,1.45±0.04\theta = 0.84 \pm 0.03, 1.45 \pm 0.04, in d=2,3d = 2, 3, respectively. These results are compared with previous analytical and numerical estimates.Comment: 10 pages, REVTEX3.0; 3 ps files (separate:tar/gzip/uuencoded) for figure

    Lesley Les Miller oral history interview by Andrew Huse, December 3, 2003

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    Les Miller, Florida State Senator, discusses his experiences as an older, black student at USF in the 1970s

    Richard Wingard oral history interview by Andrew Huse, February 4, 2004

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    Richard (Dick) Wingard, a contract coordinator, discusses his experiences working with the food services on campus, and the many changes in diet, products, and expectations of the University community

    Jacqueline Spike Gillespie oral history interview by Andrew Huse, September 8, 2004

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    Jacqueline Spike Gillespie discusses her time on campus, during which she wrote a column for The Oracle called Bloody Monday that typically highlighted a controversial topic

    Bill Buxton oral history interview by Andrew Huse, September 16, 2003

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    Bill Buxton, a former WUSF-TV station manager who came to the university as an administrator and filmmaker in 1969, discusses the development of the TV station and how facilities have changed and improved over time. Buxton worked with many university programs to create films and many of the projects he was involved with have won Emmys. Bill Buxton still works independently with the station program
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