3,853 research outputs found

    On the scalar nonet in the extended Nambu Jona-Lasinio model

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    We discuss the lightest scalar resonances, f0(600)f_0(600), κ(800)\kappa(800), a0(980)a_0(980) and f0(980)f_0(980) in the extended Nambu Jona-Lasinio model. We find that the model parameters can be tuned, but unnaturally, to accommodate for those scalars except the f0(980)f_0(980). We also discuss problems encountered in the K Matrix unitarization approximation by using NcN_c counting technique.Comment: 23 pages 3 eps figures, To appear in Nucl. Phys.

    Arbitrarily Large Continuous-Variable Cluster States from a Single Quantum Nondemolition Gate

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    We present a compact experimental design for producing an arbitrarily large optical continuous-variable cluster state using just one single-mode vacuum squeezer and one quantum nondemolition gate. Generating the cluster state and computing with it happen simultaneously: more entangled modes become available as previous modes are measured, thereby making finite the requirements for coherence and stability even as the computation length increases indefinitely.Comment: (v2) 5 pages, 4 color figures, added brief mention of fault tolerance, version accepted for publication (note: actual published version is edited slightly for space); (v1) 4 pages, 4 color figure

    In situ imaging of microstructure formation in electronic interconnections

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    The development of microstructure during melting, reactive wetting and solidification of solder pastes on Cu-plated printed circuit boards has been studied by synchrotron radiography. Using Sn-3.0Ag-0.5Cu/Cu and Sn-0.7Cu/Cu as examples, we show that the interfacial Cu6Sn5 layer is present within 0.05 s of wetting, and explore the kinetics of flux void formation at the interface between the liquid and the Cu6Sn5 layer. Quantification of the nucleation locations and anisotropic growth kinetics of primary Cu6Sn5 crystals reveals a competition between the nucleation of Cu6Sn5 in the liquid versus growth of Cu6Sn5 from the existing Cu6Sn5 layer. Direct imaging confirms that the β-Sn nucleates at/near the Cu6Sn5 layer in Sn-3.0Ag-0.5Cu/Cu joints

    Gateway design for LAN interconnection via ISDN

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    Computer Networks and ISDN Systems19143-5

    Negotiating the female successor-leader role within family business succession in China

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    This article explores the approaches of identity construction used by Chinese daughters while negotiating the successor–leader role within family businesses. A qualitative interpretivist approach was adopted to understand daughter views on gender, family business leadership and succession, as well as the approaches adopted to negotiate the role of female successor/leader in the Chinese family business. Twenty semi-structured interviews were conducted with both actual and potential female successors. Three approaches of identity construction emerged based on the degree of conformity to traditional gender roles and Confucian family values: first, to abide by conventional gender expectations and perceive themselves as a temporary leader; second, to act as the ‘second leader’ and remain involved in decision making and third, to challenge conventional gender roles and strive to be an independent leader. This article contributes to debates on women in family business and gendered identity construction of daughters in family business in the Chinese context
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