Now showing items 86-105 of 767

    • Dark Matter Results from 225 Live Days of XENON100 Data 

      The XENON100 collaboration; Shagin, P. (2012-11)
      We report on a search for particle dark matter with the XENON100 experiment, operated at the Laboratori Nazionali del Gran Sasso for 13 months during 2011 and 2012. XENON100 features an ultralow electromagnetic background ...
    • Defining and resolving current systems in geospace 

      Ganushkina, N.Y.; Liemohn, M.W.; Dubyagin, S.; Daglis, I.A.; Dandouras, I.; De Zeeuw, D.L.; Ebihara, Y.; Ilie, R.; Katus, R.; Kubyshkina, M.; Milan, S.E.; Ohtani, S.; Ostgaard, N.; Reistad, J.P.; Tenfjord, P.; Toffoletto, F.; Zaharia, S.; Amariutei, O. (2015)
      Electric currents flowing through near-Earth space (R≤12RE) can support a highly distorted magnetic field topology, changing particle drift paths and therefore having a nonlinear feedback on the currents themselves. A ...
    • Deformation of a Trapped Fermi Gas with Unequal Spin Populations 

      Partridge, G.B.; Li, Wenhui; Liao, Y.A.; Hulet, R.G.; Haque, M.; Stoof, H.T.C. (2006)
      The real-space densities of a polarized strongly interacting two-component Fermi gas of Li6 atoms reveal two low-temperature regimes, both with a fully paired core. At the lowest temperatures, the unpolarized core deforms ...
    • Degenerate Fermi Gas of 87Sr 

      DeSalvo, B.J.; Yan, M.; Mickelson, P.G.; Martinez de Escobar, Y.N.; Killian, T.C. (2010-07-13)
      We report quantum degeneracy in a gas of ultracold fermionic Sr87 atoms. By evaporatively cooling a mixture of spin states in an optical dipole trap for 10.5 s, we obtain samples well into the degenerate regime with ...
    • Density matrix embedding from broken symmetry lattice mean fields 

      Bulik, Ireneusz W.; Scuseria, Gustavo E.; Dukelsky, Jorge (2014)
      Several variants of the recently proposed density matrix embedding theory (DMET) [G. Knizia and G. K-L. Chan, Phys. Rev. Lett. 109, 186404 (2012)] are formulated and tested. We show that spin symmetry breaking of the lattice ...
    • Dephasing of G-band phonons in single-wall carbon nanotubes probed via impulsive stimulated Raman scattering 

      Kim, J.-H.; Yee, K.-J.; Lim, Y.-S.; Booshehri, L.G.; Haroz, E.H.; Kono, J. (2012)
      We study the coherent dynamics of G-band phonons in single-wall carbon nanotubes through impulsive stimulated Stokes and anti-Stokes Raman scattering. The probe energy dependence of the phonon amplitude as well as the ...
    • Depinning transition of bubble phases in a high Landau level 

      Wang, Xuebin; Fu, Hailong; Du, Lingjie; Liu, Xiaoxue; Wang, Pengjie; Pfeiffer, L.N.; West, K.W.; Du, Rui-Rui; Lin, Xi (2015)
      In the higher Landau levels (N>0) a reentrant integer quantum Hall effect (RIQHE) state, which resides at fractional filling factors but exhibits integer Hall plateaus, has been previously observed and studied extensively. ...
    • Depinning transition of bubble phases in a high Landau level 

      Wang, Xuebin; Fu, Hailong; Du, Lingjie; Liu, Xiaoxue; Wang, Pengjie; Pfeiffer, L.N.; West, K.W.; Du, Rui-Rui; Lin, Xi (2015)
      In the higher Landau levels (N>0) a reentrant integer quantum Hall effect (RIQHE) state, which resides at fractional filling factors but exhibits integer Hall plateaus, has been previously observed and studied extensively. ...
    • Description and performance of track and primary-vertex reconstruction with the CMS tracker 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
      A description is provided of the software algorithms developed for the CMS tracker both for reconstructing charged-particle trajectories in proton-proton interactions and for using the resulting tracks to estimate the ...
    • Detecting antiferromagnetism of atoms in an optical lattice via optical Bragg scattering 

      Corcovilos, T.A.; Baur, S.K.; Hitchcock, J.M.; Mueller, E.J.; Hulet, R.G. (2010)
      Antiferromagnetism of ultracold fermions in an optical lattice can be detected by Bragg diffraction of light, in analogy to the diffraction of neutrons from solid-state materials. A finite sublattice magnetization will ...
    • Detecting the Biopolymer Behavior of Graphene Nanoribbons in Aqueous Solution 

      Wijeratne, Sithara S.; Penev, Evgeni S.; Lu, Wei; Li, Jingqiang; Duque, Amanda L.; Yakobson, Boris I.; Tour, James M.; Kiang, Ching-Hwa (2016)
      Graphene nanoribbons (GNR), can be prepared in bulk quantities for large-area applications by reducing the product from the lengthwise oxidative unzipping of multiwalled carbon nanotubes (MWNT). Recently, the biomaterials ...
    • DETECTION OF SPECTRAL EVOLUTION IN THE BURSTS EMITTED DURING THE 2008–2009 ACTIVE EPISODE OF SGR J1550−5418 

      Von Kienlin, Andreas; Gruber, David; Kouveliotou, Chryssa; Granot, Jonathan; Baring, Matthew G.; Gogus, Ersin; Huppenkothen, Daniela; Kaneko, Yuki; Lin, Lin; Watts, Anna L.; Bhat, Narayana P.; Guiriec, Sylvain; Van Der Horst, Alexander J.; Bissaldi, Elisabetta; Greiner, Jochen; Meegan, Charles A.; Paciesas, William S.; Preece, Robert D.; Rau, Arne (2012)
      In early 2008 October, the soft gamma repeater SGR J1550−5418 (1E 1547.0−5408, AX J155052−5418, PSR J1550−5418) became active, emitting a series of bursts which triggered the Fermi Gamma-ray Burst Monitor (GBM) after ...
    • Determination of the top-quark pole mass and strong coupling constant from the tt production cross section in pp collisions at √s = 7 TeV 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2014)
      The inclusive cross section for top-quark pair production measured by the CMS experiment in proton–proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order ...
    • Di-electron spectrum at mid-rapidity in p + p collisions at √ s = 200 GeV 

      STAR Collaboration; Butterworth, J.; Eppley, J.; Geurts, F.; Llope, W.J.; McDonald, D.; Yepes, P. (2012)
      We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e + e − decays, from √ s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at ...
    • Diagnosing the Time Dependence of Active Region Core Heating from the Emission Measure. II. Nanoflare Trains 

      Reep, J.W.; Bradshaw, S.J.; Klimchuk, J.A. (2013)
      The time dependence of heating in solar active regions can be studied by analyzing the slope of the emission measure distribution coolward of the peak. In a previous study we showed that low-frequency heating can account for ...
    • DIAGNOSING THE TIME-DEPENDENCE OF ACTIVE REGION CORE HEATING FROM THE EMISSION MEASURE. I. LOW-FREQUENCY NANOFLARES 

      Bradshaw, S.J.; Klimchuk, J.A.; Reep, J.W. (2012)
      Observational measurements of active region emission measures contain clues to the time dependence of the underlying heating mechanism. A strongly nonlinear scaling of the emission measure with temperature indicates a large ...
    • Dicke superradiance in solids [Invited] 

      Cong, Kankan; Zhang, Qi; Wang, Yongrui; Noe, G. Timothy; Belyanin, Alexey; Kono, Junichiro (2016)
      Recent advances in optical studies of condensed matter systems have led to the emergence of a variety of phenomena that have conventionally been studied in the realm of quantum optics. These studies have not only deepened ...
    • Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at √sNN=200 GeV 

      STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W.J.; Roberts, J.B.; Xin, K.; Yepes, P. (2014)
      We report on the first measurement of the azimuthal anisotropy (v2) of dielectrons (e+e− pairs) at mid-rapidity from √sNN=200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), ...
    • Dielectron Mass Spectra from Au+Au Collisions at √sNN=200  GeV 

      STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Llope, W.J.; Roberts, J.B.; Xin, K.; Yepes, P. (2014)
      We report the STAR measurements of dielectron (e+e−) production at midrapidity (|yee|<1) in Au+Au collisions at √sNN=200  GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30–0.76 ...
    • Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s=7 eV 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Michlin, B.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2015)
      Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse ...