Experimental L-band SST satellite communications/surveillance terminal study. Volume 5 - Aircraft terminal definition

Aircraft terminal designs for experimental and operational supersonic transport for L band satellite air traffic contro

Static-light matrix elements on a dynamical anisotropic lattice

The static-light matrix element needed to determine $f_B$ is studied on an anisotropic lattice with $N_f=2$. The improvement in precision due to stout links and all-to-all propagators is investigated.Comment: Lattice2004(heavy), Fermilab, June 21-26, 2004. 3 page

Multi-hadron states in Lattice QCD spectroscopy

The ability to reliably measure the energy of an excited hadron in Lattice QCD simulations hinges on the accurate determination of all lower-lying energies in the same symmetry channel. These include not only single-particle energies, but also the energies of multi-hadron states. This talk deals with the determination of multi-hadron energies in Lattice QCD. The group-theoretical derivation of lattice interpolating operators that couple optimally to multi-hadron states is described. We briefly discuss recent algorithmic developments which allow for the efficient implementation of these operators in software, and present numerical results from the Hadron Spectrum Collaboration.Comment: 5 pages, 3 figures, talk given at Hadron 2009, Tallahassee, Florida, December 1, 200

SPECIAL OPERATIONS SUPPORT TO GOVERNANCE: ESTABLISHMENT OF A NEW NPS ACADEMIC TRACK, CERTIFICATE AND COURSE

This capstone established the SOF-G track, certificate, and course to meet the needs of Army Special Operations Forces, with particular emphasis on Civil Affairs Forces. This curriculum prepares future ARSOF senior leaders with a comprehensive understanding of transitional governance. This includes the theories, methods, and practices to apply governance-based support activities in competition, large-scale combat operations, the consolidation of gains, and in contested, austere, denied, and politically sensitive environments. This course of study combines governance studies with applied sciences, mathematical modeling, visual analytics, and relevant case study. By sharing the coursework and faculty from the Departments of Defense Analysis and National Security Affairs, students experience regionally focused governance-based courses while expanding their professional networks between ARSOF and Foreign Area Officers, academics, and other Unified Action Partners. This path preserves the AOC and JPME coursework that make NPS a premier ILE venue. The SOF-G curriculum integrates advanced academics with Civil Affairs governance competencies outlined in Field Manual 3-57 Civil Affairs Operations and addresses key findings from the 2020 Army Futures Command-led Civil Affairs Force Modernization Assessment.Outstanding ThesisMajor, United States ArmyMajor, United States ArmyApproved for public release. Distribution is unlimited

Charmonium Spectrum on dynamical anisotropic lattices

We present a first study of the charmonium spectrum on N_f=2 dynamical, anisotropic lattices. We take advantage of all-to-all quark propagators to build spatially extended interpolating operators to increase the overlap with states not easily accessible with point propagators such as radially excited states of eta_c, psi, and chi_c, D-waves and hybrid states.Comment: 9 pages, 7 figures, Lattice 2005 Conferenc

The heavy quark's self energy from moving NRQCD on the lattice

We present a calculation of the heavy quark's self energy in moving NRQCD to one-loop in perturbation theory. Results for the energy shift and external momentum renormalisation are discussed and compared with non-perturbative results. We show that the momentum renormalisation is small, which is the result of a remnant of re-parameterisation invariance on the lattice.Comment: Talk given at Lattice2004(heavy), Fermilab, June 21-26, 200

On the Interpretation of Supernova Light Echo Profiles and Spectra

The light echo systems of historical supernovae in the Milky Way and local group galaxies provide an unprecedented opportunity to reveal the effects of asymmetry on observables, particularly optical spectra. Scattering dust at different locations on the light echo ellipsoid witnesses the supernova from different perspectives and the light consequently scattered towards Earth preserves the shape of line profile variations introduced by asymmetries in the supernova photosphere. However, the interpretation of supernova light echo spectra to date has not involved a detailed consideration of the effects of outburst duration and geometrical scattering modifications due to finite scattering dust filament dimension, inclination, and image point-spread function and spectrograph slit width. In this paper, we explore the implications of these factors and present a framework for future resolved supernova light echo spectra interpretation, and test it against Cas A and SN 1987A light echo spectra. We conclude that the full modeling of the dimensions and orientation of the scattering dust using the observed light echoes at two or more epochs is critical for the correct interpretation of light echo spectra. Indeed, without doing so one might falsely conclude that differences exist when none are actually present.Comment: 18 pages, 22 figures, accepted for publication in Ap

Practical all-to-all propagators for lattice QCD

A new method for computing all elements of the lattice quark propagator is proposed. The method combines the spectral decomposition of the propagator, computing the lowest eigenmodes exactly, with noisy estimators which are 'diluted', i.e. taken to have support only on a subset of time, space, spin or colour. We find that the errors are dramatically reduced compared to traditional noisy estimator techniques.Comment: 24 pages, 18 figure