3,249 research outputs found
QCD on a transverse lattice
We present results from a transverse lattice study of low lying mesons.
Special emphasis is put on the issue of Lorentz invariant energy-momentum
dispersion relations for these mesons. The light-cone wave function for the
obtained in this framework is very close to its asymptotic shape.Comment: 10 pages, sprocl.sty, invited talk given at 5th International
Workshop on Particle Phyiscs Phenomenology, Chi-Pen, Taitung, Taiwan, 8-11
Nov 200
A Study of Heavy-Light Mesons on the Transverse Lattice
We present results from a study of meson spectra and structure in the limit
where one quark is infinitely heavy. The calculations, based on the framework
of light-front QCD formulated on a transverse lattice, are the first
non-perturbative studies of B-mesons in light-front QCD. We calculate the
Isgur-Wise form factor, light-cone distribution amplitude, the heavy-quark
parton distribution function and the leptonic decay constant of B-mesons.Comment: 5 pages, 3 figures, Revtex, corrected typos, added references,
included moment
Use of the Moon to Distinguish the F from the K Corona Using a Rocket Coronagraph During an Eclipse
F and K corona observations by rocket coronagraph during solar eclips
Responding to the crisis: Economic stabilisation grants
This article reviews some of the mainstream policies proposed to tackle the economic crisis of 2008-09 and its aftermath, and goes on to advocate a policy of economic stabilisation grants (ESGs). It argues that ESGs, which would be paid to every citizen at a rate that could be varied according to the severity of the crisis, would be more effective in boosting aggregate demand and more efficient in terms of resource allocation. Unlike the alternatives, ESGs would also address directly two key issues deriving from the process of globalisation, namely the growth of systemic uncertainty and rising inequality
Salient Object Detection Techniques in Computer Vision-A Survey.
Detection and localization of regions of images that attract immediate human visual attention is currently an intensive area of research in computer vision. The capability of automatic identification and segmentation of such salient image regions has immediate consequences for applications in the field of computer vision, computer graphics, and multimedia. A large number of salient object detection (SOD) methods have been devised to effectively mimic the capability of the human visual system to detect the salient regions in images. These methods can be broadly categorized into two categories based on their feature engineering mechanism: conventional or deep learning-based. In this survey, most of the influential advances in image-based SOD from both conventional as well as deep learning-based categories have been reviewed in detail. Relevant saliency modeling trends with key issues, core techniques, and the scope for future research work have been discussed in the context of difficulties often faced in salient object detection. Results are presented for various challenging cases for some large-scale public datasets. Different metrics considered for assessment of the performance of state-of-the-art salient object detection models are also covered. Some future directions for SOD are presented towards end
B-Mesons on the Transverse Lattice
We present results from a first study of -mesons that is based on a
transverse lattice formulation of light-front QCD. The shape of the Isgur-Wise
form factor is in very good agreement with experimental data. However, the
calculations yield rather large values for and compared
to contemporary calculations based on other techniques.Comment: invited talk given at CSSM workshop on `Lattice Hadron Physics',
Cairns, July 2001 and at ECT* workshop on `Light-cone Physics: Particles and
String', Trento, Sept. 200
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