Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.8k papers
- Deutsches Elektronen-Synchrotron DESYDE1.7k papers
- Lawrence Berkeley National LaboratoryUS1.7k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.7k papers
- TU Dortmund UniversityDE1.6k papers
- Heidelberg UniversityDE1.6k papers
- The Ohio State UniversityUS1.6k papers
- Stockholm UniversitySE1.6k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.5k papers
- University of California, IrvineUS1.5k papers
- Johannes Gutenberg University MainzDE1.5k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR1.5k papers
135 papers · 1 filter
Growing networks under geographical constraints
R. Xulvi-Brunet, I. M. Sokolov
Inspired by the structure of technological networks, we discuss network evolution mechanisms which give rise to topological properties found in real spatial networks. Thus, the pec…
Carrier induced ferromagnetism in diluted local-moment systems
Guixin Tang, Wolfgang Nolting
The electronic and magnetic properties of concentrated and diluted ferromagnetic semiconductors are investigated by using the Kondo lattice model, which describes an interband exch…
Spin wave excitations: The main source of the temperature dependence of Interlayer exchange coupling in nanostructures
S. Schwieger, J. Kienert, K. Lenz +3
Quantum mechanical calculations based on an extended Heisenberg model are compared with ferromagnetic resonance (FMR) experiments on prototype trilayer systems Ni_7/Cu_n/Co_2/Cu(00…
H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
HESS Collaboration, F. A. Aharonian
The shell-type supernova remnant RX J0852.0-4622 was observed with the High Energy Stereoscopic System (H.E.S.S.) of Atmospheric Cherenkov Telescopes between December 2004 and May…
Eigenvalue estimates for Dirac operators with parallel characteristic torsion
Ilka Agricola, Thomas Friedrich, Mario Kassuba
Assume that the compact Riemannian spin manifold admits a -structure with characteristic connection and parallel characteristic torsion (), and co…
Bottom production cross section from double muonic decays of b-hadrons in 920 GeV proton-nucleus collision
B Collaboration, I. Abt
The b-bbar production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavored hadrons in the kinematic region $-…
On the D3-brane description of some 1/4 BPS Wilson loops
Nadav Drukker, Simone Giombi, Riccardo Ricci +1
Recently it has been proposed that Wilson loops in high-dimensional representations in N=4 supersymmetric Yang-Mills theory (or multiply wrapped loops) are described by D-branes in…
Restoration of Dynamically Broken Chiral and Color Symmetries for an Accelerated Observer
D. Ebert, V. Ch. Zhukovsky
We study the behavior of quark and diquark condensates at finite Unruh temperature as seen by an accelerated observer. The gap equations for these condensates have been obtained wi…
Quantitative comparison of filtering methods in lattice QCD
Falk Bruckmann, Christof Gattringer, Ernst-Michael Ilgenfritz +3
We systematically compare filtering methods used to extract topological excitations (like instantons, calorons, monopoles and vortices) from lattice gauge configurations, namely AP…
Measurement of K0S, Lambda, Antilambda production at HERA
ZEUS Collaboration, S. Chekanov
The production of the neutral strange hadrons , and has been measured in collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson rat…
Dispersionless transport in a washboard potential
Katja Lindenberg, J. M. Sancho, A. M. Lacasta +1
We study and characterize a new dynamical regime of underdamped particles in a tilted washboard potential. We find that for small friction in a finite range of forces the particles…
MAGIC upper limits on the very high energy emission from GRBs
J. Albert, E. Aliu, H. Anderhub +57
The fast repositioning system of the MAGIC Telescope has allowed during its first data cycle, between 2005 and the beginning of year 2006, observing nine different GRBs as possible…
Observation of very high energy gamma-rays from the AGN 1ES 2344+514 in a low emission state with the MAGIC telescope
J. Albert et al.
The MAGIC collaboration has observed very high energy gamma ray emission from the AGN 1ES 2344+514. A gamma-ray signal corresponding to an 11 sigma excess and an integral flux of (…
Fast variability of TeV gamma-rays from the radio galaxy M 87
HESS Collaboration, F. A. Aharonian
The detection of fast variations of the TeV (10^12 eV) gamma-ray flux, on time-scales of days, from the nearby radio galaxy M 87 is reported. These variations are ~10 times faster…
On the number of bound states for weak perturbations of spin-orbit Hamiltonians
Jochen Bruening, Vladimir Geyler, Konstantin Pankrashkin
We give a variational proof of the existence of infinitely many bound states below the continuous spectrum for some weak perturbations of a class of spin-orbit Hamiltonians includi…
Primary particle acceleration above 100 TeV in the shell-type Supernova Remnant RX J1713.7-3946 with deep H.E.S.S. observations
The HESS Collaboration, F. Aharonian
We present deep H.E.S.S. observations of the supernova remnant (SNR) RX J1713.7-3946. Combining data of three years - from 2003 to 2005 - we obtain significantly increased statisti…
First bounds on the very high energy gamma-ray emission from Arp 220
J. Albert et al.
Using the Major Atmospheric Gamma Imaging Cherenkov Telescope (MAGIC), we have observed the nearest ultra-luminous infrared galaxy Arp 220 for about 15 hours. No significant signal…
New analysis of semileptonic B decays in the relativistic quark model
D. Ebert, R. N. Faustov, V. O. Galkin
We present the new analysis of the semileptonic B decays in the framework of the relativistic quark model based on the quasipotential approach. Decays both to heavy D^{(*)} and lig…
Topology and confinement at T \neq 0 : calorons with non-trivial holonomy
P. Gerhold, E. -M. Ilgenfritz, M. Müller-Preussker +2
In this talk, relying on experience with various lattice filter techniques, we argue that the semiclassical structure of finite temperature gauge fields for T < T_c is dominated by…
Towards Noncommutative Fuzzy QED
Rodrigo Delgadillo-Blando, Badis Ydri
We study in one-loop perturbation theory noncommutative fuzzy quenched QED_4. We write down the effective action on fuzzy S**2 x S**2 and show the existence of a gauge-invariant UV…
Metal-semiconductor (semimetal) superlattices on a graphite sheet with vacancies
L. A. Chernozatonskii, P. B. Sorokin, E. E. Belova +2
It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrange-ment of its electronic spectrum: metallic waveguides with a high dens…
Substrate dependent bonding distances of PTCDA - A comparative XSW study on Cu(111) and Ag(111)
A. Gerlach, S. Sellner, F. Schreiber +2
We study the adsorption geometry of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on Ag(111) and Cu(111) using X-ray standing waves. The element-specific analysis shows tha…
Five years of searches for point sources of astrophysical neutrinos with the AMANDA-II neutrino telescope
A. Achterberg
We report the results of a five-year survey of the northern sky to search for point sources of high energy neutrinos. The search was performed on the data collected with the AMANDA…
Optimum unambiguous discrimination of two mixed states and application to a class of similar states
Ulrike Herzog
We study the measurement for the unambiguous discrimination of two mixed quantum states that are described by density operators and of rank d, the supports of which joi…