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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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139 papers · 1 filter
Competition between ferromagnetic and charge-orbital ordered phases in PrCaMnO for =1/4, 3/8, and 1/2
Takashi Hotta, Elbio Dagotto
Spin, charge, and orbital structures in models for doped manganites are studied by a combination of analytic mean-field and numerical relaxation techniques. At realistic values for…
Random Matrix Theory and Dirac Spectrum at Nonzero Temperature and Density
Bernd A. Berg, Harald Markum, Rainer Pullirsch +1
We investigate the eigenvalue spectrum of the staggered Dirac matrix in SU(3) gauge theory and in full QCD as well as in quenched U(1) theory on various lattice sizes. As a measure…
Melting of Charge/Orbital Ordered States in NdSrMnO: Temperature and Magnetic Field Dependent Optical Studies
J. H. Jung, H. J. Lee, T. W. Noh +4
We investigated the temperature ( 15 290 K) and the magnetic field ( 0 17 T) dependent optical conductivity spectra of a charge/orbital ordered manganite, N…
Averages over curves with torsion
Daniel Oberlin, Hart Smith, Christopher D. Sogge
We establish Sobolev mapping properties for averages over certain curves in , which improve upon the estimates obtained by interpolation.
Hard Single Diffraction in pbarp Collisions at root-s = 630 and 1800 GeV
The D0 Collaboration, B. Abbott
Using the D0 detector, we have studied events produced in proton-antiproton collisions that contain large forward regions with very little energy deposition (``rapidity gaps'') and…
First experiences with HMC for dynamical overlap fermions
Achim Bode, Urs M. Heller, Robert G. Edwards +1
We describe an HMC algorithm for dynamical overlap fermions which makes use of their good chiral properties. We test the algorithm in the Schwinger model. Topological sectors are r…
Topology and Chiral Symmetry in QCD with Overlap Fermions
Robert G. Edwards, Urs M. Heller, Joe Kiskis +1
We briefly review the overlap formalism for chiral gauge theories, the overlap Dirac operator for massless fermions and its connection to domain wall fermions. We describe properti…
Magnetotransport in the low carrier density ferromagnet EuB_6
S. Suellow, I. Prasad, S. Bogdanovich +3
We present a magnetotransport study of the low--carrier density ferromagnet EuB_6. This semimetallic compound, which undergoes two ferromagnetic transitions at T_l = 15.3 K and T_c…
Josephson Effect in Fulde-Ferrell-Larkin-Ovchinnikov Superconductors
Kun Yang, D. F. Agterberg
Due to the difference in the momenta of the superconducting order parameters, the Josephson current in a Josephson junction between a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superc…
Soft-gluon resummation and NNLO corrections for direct photon production
Nikolaos Kidonakis, J. F. Owens
The resummation of threshold logarithms for direct photon production cross sections in hadronic collisions is presented. The resummation is based on the factorization properties of…
Hall cross size scaling and its application to measurements on nanometer-size iron particle arrays
S. Wirth, S. von Molnar
Hall crosses were used to measure the magnetic properties of arrays of ferromagnetic, nanometer-scale iron particles. The arrays typically consist of several hundred particles of 9…
Scaling tests of the improved Kogut-Susskind quark action
The MILC collaboration, C. Bernard, T. Burch +8
Improved lattice actions for Kogut-Susskind quarks have been shown to improve rotational symmetry and flavor symmetry. In this work we find improved scaling behavior of the rho and…
Linear orbits of arbitrary plane curves
Paolo Aluffi, Carel Faber
The `linear orbit' of a plane curve of degree is its orbit in under the natural action of $\PGL(3)$. In this paper we obtain an algorithm computing the degree of…
Measurement of p + d -> 3He + eta in S(11) Resonance
M. Betigeri, J. Bojowald, A. Budzanowski +36
We have measured the reaction p + d -> 3He + eta at a proton beam energy of 980 MeV, which is 88.5 MeV above threshold using the new ``germanium wall'' detector system. A missing--…
Large-x Parton Distributions
S. Kuhlmann, J. Huston, J. Morfin +5
Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are genera…
The Isolated Photon Cross Section in p pbar Collisions at sqrt(s) = 1.8 TeV
D0 Collaboration, B. Abbott
We report a new measurement of the cross section for the production of isolated photons, with transverse energies (ET) above 10 GeV and pseudorapidities |eta| < 2.5, in p pbar coll…
Peculiarities in Low Temperature Properties of Doped Manganites A1-xBxMnO3
M. O. Dzero, L. P. Gor'kov, V. Z. Kresin
The phase diagram and low temperature properties of the doped manganites A1-xBxMnO3 are discussed for the concentrations x < 0.4. The transition from insulating antiferromagnetic t…
The ratio of proton's electric to magnetic form factors measured by polarization transfer
The Jefferson Lab Hall A Collaboration, M. K. Jones
The ratio of the proton's elastic electromagnetic form factors was obtained by measuring the transverse and longitudinal polarizations of recoiling protons from the elastic scatter…
Calculable Sparticle Masses with Radiatively Driven Inverted Mass Hierarchy
Howard Baer, Pedro Mercadante, Xerxes Tata
Supersymmetric models with an inverted mass hierarchy (IMH: multi-TeV first and second generation matter scalars, and sub-TeV third generation scalars) can ameliorate problems aris…
A Measurement of the W to tau+nu Production Cross Section in p-pbar Collisions at sqrt(s) = 1.8 TeV
D0 Collaboration, B. Abbott
We report on a measurement of sigma(p-pbar to W+X) times B(W to tau+nu) in p-pbar collisions at sqrt(s) = 1.8 TeV at the Fermilab Tevatron. The measurement is based on an integrate…
Limits on Anomalous WWgamma and WWZ Couplings from WW/WZ->enujj Production
D0 collaboration, B. Abbott, M. Abolins
Limits on anomalous WWgamma and WWZ couplings are presented from a study of WW/WZ->enujj events in ppbar collisions at sqrt{s}=1.8 TeV. Results from the analysis of data collected…
Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrt{s}=1800 and 630 GeV
D0 Collaboration, B. Abbott
Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet…
Limits on Quark Compositeness from High Energy Jets in PbarP Collisions at 1.8 TeV
D0 collaboration, B. Abbott
Events in PbarP collisions at sqrt(s)=1.8 TeV with total transverse energy exceeding 500 GeV are used to set limits on quark substructure. The data are consistent with next-to-lead…
1/m_Q Corrections to the Bethe-Salpeter Equation for Λ_{Q} in the Diquark Picture
X. -H. Guo, A. W. Thomas, A. G. Williams
Corrections of order 1/m_Q (Q=b or c) to the Bethe-Salpeter (B-S) equation for Λ_Q are analyzed on the assumption that the heavy baryon Λ_Q is composed of a heavy quark and a scala…